FLEX 12ft Trampoline
jumpflex FLEX trampoline ladder
Picture of FLEX™ 12ft Trampoline
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mum and daughter playing on jumpflex trampoline

FLEX™ 12ft Trampoline

4.8 out of 5 star rating
4.8 star rating1,472 reviews

The FLEX™ 12 ft Trampoline is an excellent all-rounder for jumpers of all ages. Featuring a 4m diameter and a 3.2m jumping mat, it fits well in medium-sized yards. With a robust construction that supports up to 150kg, this model is perfect for young families. Its versatile design and strong build make it a perfect 12 ft trampoline for versatile fun in the United Kingdom, combining safety, great value and enjoyment for everyone.

Ladder included (valued at £39)

* RRP as at 2 July 2026

Real Reviews From Real Customers

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4.8 out of 5 star rating
4.8 star rating15,945 reviews
Shahana R. Verified Buyer8 July 2026
5.0 out of 5 star rating
1 reviews
This was delivered super fast and all items arrived together. Amazing! Defo recommend.
Shahana R. Verified Buyer8 July 2026
5.0 out of 5 star rating
1 reviews
The ProJam basketball hoop has been such a fun addition to our trampoline! My older child absolutely loves it, and it adds a whole new level of excitement to bouncing. It came with a small basketball...
Stephen M. Verified Buyer7 July 2026
5.0 out of 5 star rating
1 reviews
Very pleased with the trampoline Great service, Delivery good updates Product is a good quality, and assembly was straightforward All in all very happy
Tracey T. Verified Buyer5 July 2026
5.0 out of 5 star rating
1 reviews
Very good delivered on time easy to put together with two people and my son loves it and is enjoying himself with his friends.
Kayleigh D. Verified Buyer4 July 2026
5.0 out of 5 star rating
1 reviews
Really helpful customer service. Trampoline came packaged well, with clear instructions and was easy to put together. You’ll need strength for the springs!!
Carl W. Verified Buyer2 July 2026
5.0 out of 5 star rating
1 reviews
I have been thoroughly impressed with both the trampoline and the customer service. The trampoline arrived promptly and assembly is relatively easy. The product is excellent and the after care has bee...
Sarah M. Verified Buyer1 July 2026
5.0 out of 5 star rating
1 reviews
Excellent trampoline, the materials are of a high quality and the instructions are easy to follow. Shipping was very quick and everything was well packaged.
Thalia S. Verified Buyer30 June 2026
5.0 out of 5 star rating
1 reviews
Love the item and my kids can’t stop jumping. Easy to clean and very strongly built.
Thalia S. Verified Buyer30 June 2026
5.0 out of 5 star rating
1 reviews
Amazing and good product
Sally T. Verified Buyer30 June 2026
5.0 out of 5 star rating
1 reviews
This is a wonderful trampoline. My grandchildren love it. I had a couple of small issues but they were dealt with by the company immediately. The net makes it really safe and it’s such excellent exer...
Carolyn L. Verified Buyer28 June 2026
5.0 out of 5 star rating
1 reviews
Excellent service. Great product. Easy to follow instructions.
Carolyn L. Verified Buyer28 June 2026
5.0 out of 5 star rating
1 reviews
The delivery of the trampoline was prompt. It was easy to put together and the instructions were very easy to follow. The price was good for a great quality product.

The perfect starter

The trampoline for a growing family

flex logo white

Our FLEX™ 12 ft trampoline has been built with young families in mind, delivering a great bouncing experience + full safety features + a great low price! Choose Jumpflex® and play for life!

More space between you and the poles

200% more clearance dramatically softens any pole contact

With our unique patented design, the poles curve away from the trampoline, so you can go crazy! Flip, spin, twirl and do all the stuff that makes bouncing so much fun, with less risk.

jumpflex anti-rust frame treatment video

Built to last

Protection from Mother Nature

As well as looking great in your backyard, Jumpflex™ 12 ft trampolines are designed to stand the test of time. Jumpflex™ metal components undergo a 6-layer rust-proofing and durability process.

All metal components are galvanised inside and out with a hard-wearing zinc coating. Visible sections are finished with a UV-resistant black powder coating. This ensures Jumpflex™ trampolines will remain a property feature you'll be proud of.

kids bouncing

150 kg total weight rating

Built for a growing family

Well-built trampolines equal bigger, smoother bouncing for your family. Good thing our new Jumpflex® FLEX™ 12 ft trampoline features our zero-bolt, zero-weld approach, that not only looks fantastic, but also improves frame strength and stability. This trampoline easily caters for a young family, handling up to a 150 kg load!

Total weight rating
150 kg
Max individual user weight
100 kg

Designed for safety

Built to last

We’ve made our 12 ft FLEX™ trampolines with safety in mind! Built to global safety certification standards: ASTM & CE, Jumpflex® trampolines are recognised as the ultimate in trampoline design.

360-degree protection

SafeSeal™ technology

360 degree trampoline safety net

Our 12 ft trampolines feature a 360-degree net safety enclosure to prevent the chance of accidents. Jumpflex® nets securely clip down to the jumping mat all the way around the trampoline. This unique SafeSeal™ system with self-closing entrance ensures that there is no possibility for kids to fall out of the trampoline enclosure accidentally.

trampoline safety net

A tight weave nylon safety net that’ll last

TightWeave™ technology

Our 12 ft trampolines are built to last, with nets made from 100% high-strength nylon and woven using the TightWeave™ system. A protective UV additive protects the nets against sun damage, allowing your new 12 ft trampoline to weather all seasons.

Grade 6 Intertek UV Testing
6
More durable than standard nets
250%
trampoline parts

World's first weld-free, bolt-free trampoline

Patented FrameFusion™ technology

Our 2024 model’s patented eco-friendly design has zero-bolts and no welds, meaning it takes half the assembly time of traditional trampolines.

FrameFusion™

T E C H N O L O G Y

Whatsmore, the way our engineers have designed the trampoline, means that less nasties are required in the manufacturing process, which makes our trampolines the most eco-friendly around, removing pollutants that can impact our trampoline builders and the environment.

5 Year Warranty

Play for life

Jumpflex® currently offers an awesome 5 year warranty on the FLEX™ frame, so years of carefree bouncing are guaranteed. We also have an excellent customer support team to assist you with any questions or concerns about your new 12 ft trampoline. So choose Jumpflex® and play for life!

jumpflex colourful balls

Dimensions / Specs

Trampoline specs.
Yard space
4 m diameter at widest point. 1 m recommended free space around the trampoline.
Jumping mat diameter
3.2 m
Number of springs
70
Spring length
140 mm
Total weight rating
150 kg
Frame tube diameter
42 mm
Floor to mat height
88 cm
Net height
1.8 m
Total trampoline height
2.7 m
Box dimensions
  • Box 1 - 23.7 kg
    L: 119 cm, W: 45 cm, H: 15 cm
  • Box 2 - 23.12 kg
    L: 119 cm, W: 45 cm, H: 23 cm
  • Box 3 - 24.7 kg
    L: 110 cm, W: 45 cm, H: 18 cm

Bring The Fun With Accessories!

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PROJAM™

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JUMPSLIDE™

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SMARTSHADE™

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AQUAJET™

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ANCHORKIT™ PRO

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ANCHORKIT™

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FLEXBOARD™

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SCOOTER

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