SKU: 32795307840

OFF AIR 4 (20")

Sale price$539.55 Regular price$599.50
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

OFF AIR 4 (20")The newly upgraded 20" woom OFF AIR 4 will take its Rider beyond the beginning stages of their mountain biking journey. Stable, responsive, and equipped with a high performance front suspension system, durable components, and tubeless compatible rims and tires, it provides best in class value in its category. Off road capable and kid tested, this mountain bike was ergonomically designed for growing bodies and developing abilities. The woom OFF AIR 4

The newly upgraded 20" woom OFF AIR 4 will take its Rider beyond the beginning stages of their mountain biking journey. Stable, responsive, and equipped with a high-performance front suspension system, durable components, and tubeless-compatible rims and tires, it provides best-in-class value in its category. Off-road capable and kid-tested, this mountain bike was ergonomically designed for growing bodies and developing abilities. The woom OFF AIR 4 is more than capable on cross-country trails yet, uncompromising on gravel, pavement, or wherever the spirit leads your Rider.

FEATURES:

  • Ultralight frame: The premium aluminum frame is lightweight with a sporty geometry, making it safe and intuitive for your child to handle on their off-road adventures. The kink in the top tube means it's easy to dismount quickly, so your child can get off the saddle safely even in the trickiest situations.
  • Premium suspension fork: Fine-tune the air suspension fork to your rider's weight for optimal shock absorption, ensuring constant wheel contact and unwavering control, no matter how rugged the trail. You can also adjust the rebound and compression too – and activate the lockout function when riding on the road.
  • Ultimate design for young riders: With a low center of gravity, flat steering angle and long wheelbase, the sporty frame design provides a perfectly smooth and agile ride – and that means secure handling, good balance and a whole lot of fun for your child.
  • Powerful disc brakes: The powerful disc brakes are easy to modulate and reliable at all times – even when the weather is wet and the ground is muddy. Teamed with the child-specific, reach-adjustable brake levers, they allow your child to stay in full control in every situation.
  • Precise 9-speed gearing: Shifting is smooth and precise on any terrain thanks to the easy-to-operate SRAM X5 gearing. Kids can easily work the trigger shifter with their thumbs, with the reliable Exact Actuation™ gear technology ensuring speed and precision every time.
  • High-quality drivetrain: Optimum power transfer and smooth pedaling without dropping the chain? Not a problem thanks to the lightweight, child-specific cranks and the narrow-wide chainring that keeps the chain firmly in place even on the roughest of terrains. The cassette’s wide gear range keeps your child moving on flat stretches and steep climbs alike.
  • Grippy, tubeless-ready tires: The high-quality Schwalbe tires provide the perfect balance between low rolling resistance and good grip. With Tubeless Easy technology and tubeless-ready rims, it’s a straightforward transition to go tubeless and benefit from even more grip and comfort.
  • Age: 6 - 8 years

SPECS:

Frame
  • Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes
  • 20″ wheels
  • Easy-access low top tube to assist dismounting
  • Long wheelbase and low center of gravity to aid balancing
  • Featuring woom-specific molded chainstay protector 
Fork
  • RST SPEX hydraulic air suspension fork with 60 mm travel, adjustable compression, and rebound damping, plus lock-out
  • 1 – 1 ⅛″ tapered steerer tube
  • 100 x 15 mm thru axle
  • Post mount for disc brake
Gears
  • 9 speeds
Crankset/Chainring
  • Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor)
Cassette
  • Cassette with 11-32 teeth in the back
Rear Derailleur
  • SRAM X5 rear derailleur
Shifters
  • SRAM X5 trigger shifter
Brakes
  • Hydraulic disc brakes by Promax
  • Rotor diameter front/back: 140/140 mm
  • Ergonomic brake levers designed for a child’s hands
Handlebar
  • Wide, ergonomically adapted and lightweight aluminum bars for more control
  • Tapered end to fit a child’s hand
  • Sandblasted and silver anodized
  • Width: 570 mm
  • Rise: 20 mm
Stem
  • Forged aluminum
  • CNC-machined
  • Handlebars attached via two clamps
  • Rise/drop: +/-15° with flip-flop design to adjust the handlebar height
  • Length: 50 mm
Seatpost
  • 27.2 x 250 mm
  • Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth
  • Quick-release seatpost clamp
Saddle
  • Ergonomically designed to fit a child’s anatomy
  • Streamlined, mountain-bike-specific saddle design 
  • Side protection to lean against walls
Hubs
  • Aluminum hubs with sealed industrial bearings
Rims
  • Tubeless-compatible Alexrims wheelset
  • Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear)
  • 20 G14 spokes, double-crossed spoking
  • Aluminum nipples
Tires
  • 20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
  • Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability
  • Presta valves, tubeless conversion ready
Extras N/A
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32795307840

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4.9 ★★★★★
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Verified Purchase
DDD Projects
Houston, US
★★★★★ 5
OG Style
I am a big fan of Bruno Marc shoes. Over the years they have provided comfortable and affordable boots and shoes. These blue, tan and white soled dress sneakers are no exception. They have a nice finished look that makes them both causal and dressy. The lightweight style is still warm enough for colder mid-west winters. The box of the toes is wide and comfortable. The insole is well padded and a pleasure to wear. This is another fine pair of shoes to add to my collection and yours.
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Reviewed in the United States on January 14, 2026
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Verified Purchase
Premium Reviews
West Palm Beach, US
★★★★★ 5
Must buy: Comfort + Casual + Well Made / Ventilated
Size: 8, Color: Brown
Just buy it! I have put in roughly 15,000 steps in this shoes in 10 days and I can't believe how comfortable they are after this much rough use in short amount of time. I highly recommend this shoes to anyone looking for comfort in casual style.
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Reviewed in the United States on May 4, 2026
W
Verified Purchase
William W.
Houston, US
★★★★★ 5
WIDE Dress Shoes With SUPPORT
Size: 10.5, Color: Brown
I've seen dress shoes and worn dress shoes before, but these are simply the best dress shoes I've ever worn my entire life. 99% of dress shoes have the same problem, they have the thinnest little soles that offer no support. BRUNO MARC HAS SOLVED THE PROBLEM. These dress shoes not only support wide feet like mine who historically have had and still have little support in the market, but Bruno Marc has wide options that fit perfectly, and the support with the thick foam sole is so needed and awesome. I had a pleasant surprise putting these things on and there being some tactile grip enhancers inside the shoe so you can feel the shoes better and get a little tickle / massage while you're at it. These things are dripping with style, easy to wear, and while they might look firm on the outside, on the inside the shoe just has such a nice flexibility and foamy feel, the top where the top of your feet feel the roof of the shoe, it has such perfect ooey gooey support I can't believe it. The outside sole also has this neat tactile feel. The durability looks good and feels good for now.
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Reviewed in the United States on September 28, 2025
D
Verified Purchase
Dan Che
Draper, US
★★★★★ 5
Perfect Blend of Comfort and Style
Size: 9, Color: Brown, Size: 9, Color: Brown
I recently purchased size 9 of these shoes, and they exceeded my expectations in every way! Here’s what I love about them: 1. Comfort: The moment I put them on, I noticed how soft and supportive they felt. The cushioning provides all-day comfort, making them perfect for long walks, workdays, or running errands. 2. Fit: The sizing is spot-on! I ordered my usual size, and they fit perfectly with no need to size up or down. There’s enough room for my toes to move without feeling too loose or tight. 3. Style: These shoes look even better in person. The design is sleek and versatile, making them easy to pair with both casual and semi-formal outfits. I’ve received several compliments already! 4. Durability: I put it on the day of purchase. After wearing them daily for a couple of days, they still look brand new. The stitching and material seem high-quality and built to last. 5. Value for Money: For the price, these shoes deliver exceptional value. You’re getting premium comfort and style without breaking the bank. Final Thoughts: If you’re looking for shoes that offer comfort, style, and durability, I highly recommend giving these a try. I’ll definitely be considering another pair in a different color soon! To conclude, I’m very happy for this purchase. Will definitely buy again.
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Reviewed in the United States on January 13, 2025
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Verified Purchase
Roderick
New York, US
★★★★★ 5
Great Purchase
Size: 12, Color: Black
These shoes are great. They look great and extremely comfortable.
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Reviewed in the United States on May 10, 2026

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