Product Overview
One box. Three different heights. Endless possibilities for your workouts.The Synergee 3-in-1 Plywood Plyo Boxes will bring you to new heights in fitness. This easy to assemble and expertly crafted Box can be used for box jumps or step ups, elevated push-ups, dips, burpee variations, accessory work, and numerous other sweat-inducing moves.
Rotating the Box onto a different side unlocks a new challenge, as each position provides a new height to work with. Use the Box with confidence, knowing we use high quality, ¾ inch thick plywood for its construction and it can hold up to 450 lbs. Each piece of plywood is sanded and smoothed with your safety in mind and gives the Box a burly, rustic look.
Due to global supply chain issues, items may be delayed 1-3 weeks.

Features
•BOX JUMPSBox jumps involve exactly what it sounds like! Start in front of the box and facing it, and then jump to land with both feet at the same time on its surface. Start at a low height if you are new to it. This movement is great for increasing your explosive power and provides a wicked cardio workout!
•ELEVATED PUSH UPS
Lifting your feet during your push ups will add a new challenge to a traditional exercise! This modification is tougher than a regular push up and will help you add muscle in your chest, shoulders, and triceps. And if pushups are already too tough, switch the position around! Elevate your hands and keep your feet on the ground to build those push up muscles and work towards a flat position!
•WEIGHTED STEP UPS
Weighted step ups - and step ups in general - are awesome for those looking for a low-impact & high reward exercise! Hold a dumbbell in each hand, stand tall, and feel the movement challenge your quadriceps, core, glutes, and hamstrings! Plus, it's an awesome exercise for developing balance & proprioception!
•EXPERTLY CRAFTED
Our Plyo Box is made from high quality, ¾” plywood. It is built to last and can hold up to 450 lbs. Each Box comes with an internal support, enabling it to handle every workout you put it through. The wood will not warp from extended use or being excessively sweat on.
•EASY TO ASSEMBLE
Each Box comes with predrilled holes, screws, puzzle-like assembly, and an easy-to-read manual to walk you through it. All you need is a screwdriver or power drill, and you can have your box ready for a workout in 10-15 minutes!
•3 BOXES IN 1
Each box boasts 3 different heights, meaning you have 3 different levels of intensity to work with. That’s like having 3 boxes in 1! Each Box offers you challenging heights that motivate you to excel to new levels of fitness!
Specifications
Brand | Synergee |
Box Material | Plywood |
Max Weight | 450lbs |
Wood Thickness | 3/4" |
Inner Supports Required | YES (Except 16"-14"-12") |
Screws Included | YES |
Pre Drilled Holes | YES |

Due to national shipping delays, order delivery times may be impacted.
Please click here to read more about the NATIONWIDE SHIPPING DELAYS
Please contact us directly for an exact ETA of your delivery. Most of our products have a regular handling time between 3-5 business days Please allow 3-15 business days for delivery.
Freight Orders Include FREE Delivery Appointment.
Some of our heavier machines require more customization and are made-to-order in our supplier’s manufacturing plants in United States. Once completed, they are carefully
inspected at the Quality Center, after which they are shipped using freight shipping carriers.
We know that sometimes you have to wait a little longer to get your order but it's always worth it!
Please click here to read more about our Order Shipping & Delivery.
![]() |
Exchanges for damages: Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrived damaged, please send photos to info@barbellflex.com and we will process an insurance claim on your behalf. Be advised that most of our suppliers request you (the buyer) to pay for shipping the item back to them for inspection for damaged returns or replacements. In some cases, we are able to waive the fee, however this is at the discretion of our supplier and on a one-time courtesy basis. The time it takes for your exchanged product to reach you will largely vary on your location. Should the item you return be over $75, we strongly encourage you to use a trackable shipping service with signature or shipping insurance! Note that we will not be able to provide replacements/refunds without photos of the damage. |
|
![]() |
Returns & Refunds: All new products purchased through BarbellFlex.com include a 30 Day Return Guarantee. Refunds will only be issued to the original credit card that you use when placing your order. Please click here to read more about our Returns & Exchanges. |
![]() |
We Put Our Customers First! Customer experience is our #1 priority. We understand that these products are available on other websites and we are very appreciative that you chose to do business with us. As such, we pride ourselves in providing a superior concierge sales and shopping experience to all of our customers, via email, phone, social media and live chat.
|
|
![]() |
Returns are easy, simply contact us to request a return for your item and we will work with you to get the process going. We'll get you a replacement or refund in a snap! Please check our Returns & Exchanges tab for more info! |
|
![]() |
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down. Our 100% Price Guarantee has some limitations. Please click here to read more about our Price Match Guarantee. |
|
![]() |
We thank you for your incredible service!. With gratitude, we partnered with GovX to offer a discount on our store to our military, their spouses & dependents, first responders, government employees and our wonderful teachers. Please click here to read more about our GovX ID Military Discount. |
|
![]() |
Ordering from Barbell Flex is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. We invested time and money to ensure our backend system is secure and robust. We care about your information as much as you do! |
Synergee Fitness General Warranty Synergee stands behind its products: the design, manufacturing, packaging, and delivery process. We strive to make every Synergee athlete satisfied with their purchase and offer a 30 Day No Sweat Guarantee. In the first 30 days of receiving your product, if you are unsatisfied for any reason, we will perform a return or refund (on a case-by-case basis). Beyond this 30-day window, the product you ordered from Synergee is covered by one of the following warranties. The warranties begin from the day of purchase.
WARRANTY
•HOME USE :
90 Day Warranty
•Commercial Use :
90 Day Warranty
For Specific Period Warranties
Synergee will warranty this product from defects in appearance and performance on account of inapt material, delivery, and workmanship prior to the purchaser receiving the product. This warranty will be recognized for a period of time (as stated above) from the purchase date of the product. The warranty only applies to the original purchaser of the product as long as they own it. This warranty cannot be transferred or claimed by anyone other than the original purchaser.
For All Warranties
Warranty may be voided for any product which has been damaged due to negligent or faulty use, abuse, alteration, maintenance, storage or handling by the user. Any specific issues the original purchaser has with a Synergee product will be reviewed on a case-by-case basis.
Product Overview
One box. Three different heights. Endless possibilities for your workouts.The Synergee 3-in-1 Plywood Plyo Boxes will bring you to new heights in fitness. This easy to assemble and expertly crafted Box can be used for box jumps or step ups, elevated push-ups, dips, burpee variations, accessory work, and numerous other sweat-inducing moves.
Rotating the Box onto a different side unlocks a new challenge, as each position provides a new height to work with. Use the Box with confidence, knowing we use high quality, ¾ inch thick plywood for its construction and it can hold up to 450 lbs. Each piece of plywood is sanded and smoothed with your safety in mind and gives the Box a burly, rustic look.
Due to global supply chain issues, items may be delayed 1-3 weeks.

Features
•BOX JUMPSBox jumps involve exactly what it sounds like! Start in front of the box and facing it, and then jump to land with both feet at the same time on its surface. Start at a low height if you are new to it. This movement is great for increasing your explosive power and provides a wicked cardio workout!
•ELEVATED PUSH UPS
Lifting your feet during your push ups will add a new challenge to a traditional exercise! This modification is tougher than a regular push up and will help you add muscle in your chest, shoulders, and triceps. And if pushups are already too tough, switch the position around! Elevate your hands and keep your feet on the ground to build those push up muscles and work towards a flat position!
•WEIGHTED STEP UPS
Weighted step ups - and step ups in general - are awesome for those looking for a low-impact & high reward exercise! Hold a dumbbell in each hand, stand tall, and feel the movement challenge your quadriceps, core, glutes, and hamstrings! Plus, it's an awesome exercise for developing balance & proprioception!
•EXPERTLY CRAFTED
Our Plyo Box is made from high quality, ¾” plywood. It is built to last and can hold up to 450 lbs. Each Box comes with an internal support, enabling it to handle every workout you put it through. The wood will not warp from extended use or being excessively sweat on.
•EASY TO ASSEMBLE
Each Box comes with predrilled holes, screws, puzzle-like assembly, and an easy-to-read manual to walk you through it. All you need is a screwdriver or power drill, and you can have your box ready for a workout in 10-15 minutes!
•3 BOXES IN 1
Each box boasts 3 different heights, meaning you have 3 different levels of intensity to work with. That’s like having 3 boxes in 1! Each Box offers you challenging heights that motivate you to excel to new levels of fitness!
Specifications
Brand | Synergee |
Box Material | Plywood |
Max Weight | 450lbs |
Wood Thickness | 3/4" |
Inner Supports Required | YES (Except 16"-14"-12") |
Screws Included | YES |
Pre Drilled Holes | YES |

Due to national shipping delays, order delivery times may be impacted.
Please click here to read more about the NATIONWIDE SHIPPING DELAYS
Please contact us directly for an exact ETA of your delivery. Most of our products have a regular handling time between 3-5 business days Please allow 3-15 business days for delivery.
Freight Orders Include FREE Delivery Appointment.
Some of our heavier machines require more customization and are made-to-order in our supplier’s manufacturing plants in United States. Once completed, they are carefully
inspected at the Quality Center, after which they are shipped using freight shipping carriers.
We know that sometimes you have to wait a little longer to get your order but it's always worth it!
Please click here to read more about our Order Shipping & Delivery.
![]() |
Exchanges for damages: Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery. If your item(s) do arrived damaged, please send photos to info@barbellflex.com and we will process an insurance claim on your behalf. Be advised that most of our suppliers request you (the buyer) to pay for shipping the item back to them for inspection for damaged returns or replacements. In some cases, we are able to waive the fee, however this is at the discretion of our supplier and on a one-time courtesy basis. The time it takes for your exchanged product to reach you will largely vary on your location. Should the item you return be over $75, we strongly encourage you to use a trackable shipping service with signature or shipping insurance! Note that we will not be able to provide replacements/refunds without photos of the damage. |
|
![]() |
Returns & Refunds: All new products purchased through BarbellFlex.com include a 30 Day Return Guarantee. Refunds will only be issued to the original credit card that you use when placing your order. Please click here to read more about our Returns & Exchanges. |
![]() |
We Put Our Customers First! Customer experience is our #1 priority. We understand that these products are available on other websites and we are very appreciative that you chose to do business with us. As such, we pride ourselves in providing a superior concierge sales and shopping experience to all of our customers, via email, phone, social media and live chat.
|
|
![]() |
Returns are easy, simply contact us to request a return for your item and we will work with you to get the process going. We'll get you a replacement or refund in a snap! Please check our Returns & Exchanges tab for more info! |
|
![]() |
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down. Our 100% Price Guarantee has some limitations. Please click here to read more about our Price Match Guarantee. |
|
![]() |
We thank you for your incredible service!. With gratitude, we partnered with GovX to offer a discount on our store to our military, their spouses & dependents, first responders, government employees and our wonderful teachers. Please click here to read more about our GovX ID Military Discount. |
|
![]() |
Ordering from Barbell Flex is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either. We invested time and money to ensure our backend system is secure and robust. We care about your information as much as you do! |
Synergee Fitness General Warranty Synergee stands behind its products: the design, manufacturing, packaging, and delivery process. We strive to make every Synergee athlete satisfied with their purchase and offer a 30 Day No Sweat Guarantee. In the first 30 days of receiving your product, if you are unsatisfied for any reason, we will perform a return or refund (on a case-by-case basis). Beyond this 30-day window, the product you ordered from Synergee is covered by one of the following warranties. The warranties begin from the day of purchase.
WARRANTY
•HOME USE :
90 Day Warranty
•Commercial Use :
90 Day Warranty
For Specific Period Warranties
Synergee will warranty this product from defects in appearance and performance on account of inapt material, delivery, and workmanship prior to the purchaser receiving the product. This warranty will be recognized for a period of time (as stated above) from the purchase date of the product. The warranty only applies to the original purchaser of the product as long as they own it. This warranty cannot be transferred or claimed by anyone other than the original purchaser.
For All Warranties
Warranty may be voided for any product which has been damaged due to negligent or faulty use, abuse, alteration, maintenance, storage or handling by the user. Any specific issues the original purchaser has with a Synergee product will be reviewed on a case-by-case basis.