FLEX 12ft Trampoline
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 rating1,460 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)

Real Reviews From Real Customers

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4.8 out of 5 star rating
4.8 star rating15,747 reviews
Leanne B. Verified Buyer14 April 2026
5.0 out of 5 star rating
1 reviews
Fantastic trampoline. I was very apprehensive about purchasing a trampoline for my kids for various reasons. I researched and compared my options thoroughly for safety, quality and weight capacity. T...
Jo R. Verified Buyer14 April 2026
5.0 out of 5 star rating
1 reviews
Delivery was as promised, easy assembly, sturdy and easy to attach.
David E. Verified Buyer14 April 2026
5.0 out of 5 star rating
1 reviews
Great trampoline. Easy to put together. I’m 71 and I did it on my own!!
Carole T. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Great trampoline - I have four children who use it so needed a strong trampoline that would take a good weight. So this was perfect - very pleased with how it went together - the instructions were ver...
judith g. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Absolutely amazing cover and is great in all weathers, it keeps leafs off from trees and does keep some of the sun off but not 100% off. Looks the part when all together. Had a little issue with deliv...
Kathryn P. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Fantastic Trampoline. Our son Loves it. The basketball net is a great addition. Loads of fun. All easy to assemble too.
Kathryn P. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Fantastic Trampoline. Our son Loves it. The basketball net is a great addition. Loads of fun. All easy to assemble too.
Susan S. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Excellent trampoline, well made and the children love it!
Susan S. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Worth the extra money for the Pro kit fixtures particularly after some extremely strong winds in our area.
Susan S. Verified Buyer13 April 2026
5.0 out of 5 star rating
1 reviews
Excellent trampoline, the children love it!
Martin F. Verified Buyer12 April 2026
5.0 out of 5 star rating
1 reviews
So far so good! Seems robust and well-designed. Fibre glass rods are really clever addition.
Rhys J. Verified Buyer10 April 2026
5.0 out of 5 star rating
1 reviews
Well built, easy to assemble. Kids haven’t got off it yet. It has an entryway which is kind of two crossed over fabrics that you walk through rather than a zip. This is obviously great for the kids ge...

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

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.
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 - 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
£69.95
Picture of JUMPSLIDE™

JUMPSLIDE™

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

SMARTSHADE™

star rating0 reviews
£19.95 £79.95
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
Picture of SCOOTER

SCOOTER

star rating0 reviews
£99.95