jumpflex flex 12 ft trampolines
MEGA SUMMER SALE!
jumpflex FLEX trampoline ladder
Picture of FLEX 12ft Trampoline
jumpflex trampoline colour play
mum and daughter playing on jumpflex trampoline

FLEX 12ft Trampoline

4.8 out of 5 star rating
4.8 star rating1,423 reviews
Estimated Delivery

2–4 business day delivery

Warranty

5 year warranty

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)

Real Reviews From Real Customers

Powered by
4.8 out of 5 star rating
4.8 star rating14,020 reviews
Michael R. Verified Buyer10 August 2025
5.0 out of 5 star rating
1 reviews
Great communication, fast shipping and efficient delivery. All parts intact and trampoline is great!
Michael R. Verified Buyer10 August 2025
5.0 out of 5 star rating
1 reviews
Spent a long time deciding between trampolines that’d suit the family before settling on the Jumpflex Flex 12ft - so glad we did. Materials look and feel premium, it’s much simpler to put together tha...
Laura B. Verified Buyer10 August 2025
5.0 out of 5 star rating
1 reviews
Kids love it, and was easy to assemble on my own
Philip F. Verified Buyer10 August 2025
5.0 out of 5 star rating
1 reviews
Excellent quality, probably the best on the market, the cost is quite high but you get waht you pay for, we have used it daily and its like new
Philip F. Verified Buyer10 August 2025
5.0 out of 5 star rating
1 reviews
Amazing trampoline, very easy and quick to install, the quality if excellent and robust.
Harriet S. Verified Buyer9 August 2025
5.0 out of 5 star rating
1 reviews
Delighted with this very superior trampoline
Donna M. Verified Buyer9 August 2025
5.0 out of 5 star rating
1 reviews
Great quality trampoline that the kids absolutely love! The basketball hoop is a real hit especially.
Andrea P. Verified Buyer8 August 2025
5.0 out of 5 star rating
1 reviews
Easy to install. Looks great.
Christine B. Verified Buyer5 August 2025
5.0 out of 5 star rating
1 reviews
Quick and efficient delivery Robust trampoline - kids love it
Carol C. Verified Buyer4 August 2025
5.0 out of 5 star rating
1 reviews
Love it. We looked at several trampolines before deciding in the one we purchased. So glad we did, my granddaughter loves it and the slide. Very sturdy, it's everything we wanted in a trampoline. Woul...
Lesley S. Verified Buyer1 August 2025
5.0 out of 5 star rating
1 reviews
Cannot fault the service, ordered late afternoon and it arrived next day.
Lesley S. Verified Buyer1 August 2025
5.0 out of 5 star rating
1 reviews
Excellent trampoline, very pleased with the quality, easy to assemble. Ordered late afternoon and it arrived next day. My grandson loves it and so do I, great for all the family. Would recommend highl...

The perfect starter

The trampoline for a growing family

flex trampoline range 8ft 10ft
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!

jumpflex flex trampoline in garden
trampoline pole clearance

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
trampoline safety testing astm

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 ensures that there is no possibility for kids to fall out once the trampoline door is zipped shut.

top of trampoline net flex
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

fusion frame

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

Image showing dimensions for the FLEX 12ft Trampoline
Yard space
4.1 m diameter at widest point. 1 m recommended free space around the trampoline.
Number of springs
70
Spring length
140 mm
Total weight rating
150 kg
Frame tube diameter
42 mm
Floor to mat height
88 cm
Trampoline height
2.7 m
Box dimensions
  • Box 1 - 25.7 kg
    L: 121 cm, W: 38 cm, H: 25 cm
  • Box 2 - 25.5 kg
    L: 118 cm, W: 32 cm, H: 18 cm
  • Box 3 - 23.4 kg
    L: 103 cm, W: 45 cm, H: 20 cm

Bring The Fun With Accessories!

projam jumpflex trampoline basketball hoop with sofft edges

PROJAM™

star rating0 reviews
£69 £69.95
Picture of JUMPSLIDE™

JUMPSLIDE™

star rating0 reviews
£149.95
jumpflex smartshade trampoline sunshade and protective cover
Sale

SMARTSHADE™

star rating0 reviews
£12.25 £19£59.95
jumpflex aquajet trampoline sprinkler kit

AQUAJET™

star rating0 reviews
£29.95
Picture of ANCHORKIT™ PRO

ANCHORKIT™ PRO

star rating0 reviews
£39.95
Picture of ANCHORKIT™

ANCHORKIT™

star rating0 reviews
£24.95
Picture of FLEXBOARD™

FLEXBOARD™

star rating0 reviews
£119.95