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Description
woom bike mountainbike Woom Bike from Vienna Woom 4 for Age 6An innovative and ultralight 20" children's bike with 7 gears designed for all round use by children aged 6 years and over. Gear it up! The woom 4 introduces children aged six years to the world of gear shifting. The bike's seven speeds in combination with the easy to operate twist shifter expand the bike's range of use and increase the child's mobility. Whether they want to ride their bikes into the woods or up hills the new found freedom of gears
An innovative and ultralight 20" children's bike with 7 gears designed for all-round use by children aged 6 years and over.
Gear it up!
The woom 4 introduces children aged six years to the world of gear-shifting. The bike's seven speeds in combination with the easy-to-operate twist shifter expand the bike's range of use and increase the child's mobility. Whether they want to ride their bikes into the woods or up hills – the new-found freedom of gears make longer adventures on two wheels child's play.
Size:20″
Weight:17.3 lb
Top features:Gears
Frame
- Made from light, high-quality AA 6061 aluminum material
- Geometrically designed with 20” wheels with agile and easy handling in mind
- Low entry, lower sitting position, and forgiving steering geometry provide control and comfort
- woom LEGGIE Kickstand pre-installed
Wheels
- Ultralight SOOPA DOOPA HOOPS aluminum rims
- Aluminum hubs with sealed bearings and mounts for woom click-on fenders
- Quick-release skewers for easy installation and removal
- 20 lightweight, stainless steel spokes, double-crossed spoking
Tires
- 20 x 1.4″ Schwalbe Little Joe folding tires – woom edition
- High-quality, light tires for low rolling resistance and maximum grip
- Schrader (car-type) valves
- Reflective striping on tire sidewall for optimal visibility even in low-light conditions
Stem
- Lightweight stem made out of forged aluminum
- Adjustable height and reach mean the stem can be adjusted for optimal riding position as the child grows.
- Handlebars attached via two clamps and fixed with two 5 mm hex bolts
- Integrated headset bolt allows for easy compression adjustment
Handlebars
- Wide, ergonomically adapted, light aluminum bars offer more control
- Sandblasted and black anodized
- Width: 54 cm
Grips
- woom Ergogrip – designed specifically for kid’s hands
- Ergonomically formed gripping surface, non-toxic
- Handlebar ends with extra-large diameter for greater protection
- Screw-in grips ensure secure attachment to handlebars
Drive
- Lightweight, forged 4.3" (110 mm) aluminum cranks with narrow tread (Q-factor)
- Narrow-wide chainring with 28 teeth
- Cassette with 11-28 teeth
- Narrow, flat platform plastic pedals
- Sealed cartridge
Gears
- 7 speeds
- microSHIFT MS29 twist shifter
- microSHIFT M21SS rear derailleur
Fork
- Light unicrown fork made out of aluminum
- 1″ shaft
- Generous trail angle for easy handling
Headset
- Fully-integrated 1″ headset
- Sealed industrial bearings
- Integrated ahead clamp
Seat
- Ergonomically designed to fit children's pelvis
- Non-toxic
- Side protection to lean against walls
Seatpost
- Anodized aluminum seatpost
- Minimum insertion point marked, plus integrated guide in seat tube
Seatpost clamp
- Secure aluminum seatpost clamp eliminates risk of turning/twisting
- Extra-long quick-release skewer makes it easier for kids to release and close
Brakes
- Two independently operated V-brakes with braking power adapted for children
- Brake levers are ergonomically adapted, reach-adjustable, and suitable for kid’s hands
- High-quality Jagwire cables provide reduced friction and smooth performance
Enclosed tools
- 15 mm spanner for pedals
- 5 mm hex key for stem
Colors
- woom Red, Sky Blue, woom Green, Sunny Yellow, Purple Haze
Weight
- 17 lbs 5 oz
Weight limit
- 155 lbs (70 kg)
Shipping Details
- Box dimensions: 43.7” x 23.2” x 6.9”
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Sharp
Very sharp
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025
★★★★★ 5
Looks Expensive!
This watch looks expensive! Can you see the raised beveled top of the watch? Absolutely love it, now I will say it's a tab bit thin but I don't mind that.
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Reviewed in the United States on January 23, 2026
★★★★★ 5
Diseño increíble por el precio
El reloj es demasiado bonito u de una buena calidad tomando en cuenta el precio, lo único que no me gusto es el cristal que como se describe es tipo diamante desde ciertos ángulos impide ver la carátula del reloj pienso en llevarlo a un relojero a cambiar por un cristal plano, me gustaría comprarlo en otros colores tiene muchas variedades y todos lucen bonitos
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Reviewed in the United States on January 13, 2026
★★★★★ 5
Amazing Value
This watch and band Exceeded my expectations!! Attractive, well made, not too heavy, accurate time keeping, very affordable. I have watches that cost 15X as much, but I choose to wear this one!
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Reviewed in the United States on October 31, 2025
★★★★★ 5
Stylish for going out to a nice event, and comfortable
I ordered the CHEETAH Two-Tone Watch for Men for when I go out to nice places, such as to church. It is very attractive and mostly easy to read. It is difficult to identify the hands in some low to mid lighting because the face isn't flat and will catch a glare. The included tool worked well to remove some of the links to fit my wrist.
When I first put it on I didn't like the feel, mainly because I hadn't made it as loose as another nice watch that I use and it felt different. I ended up wearing it for 3 days straight, including to bed and it was comfortable enough that I noticed it less than my other watch. Now that I'm used to the different feel I'm totally loving this watch!
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Reviewed in the United States on December 6, 2024