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- USA
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
woom 4 gewicht mit pedalen WOOM OFF/ OFF AIR 4 20" Pedal Bike – WeeBikeShopWoom OFF 4 Get out and explore The 20" woom OFF 4 is the perfect first mountain bike for kids age 6 8 years and height 46 51 inches. Whether they're taking on the pump track or exploring forests and fields, this superlight and sturdy bike will help them progress in their mountain biking journey. With high quality components and tubeless compatible rims and tires, the woom OFF 4 offers exceptional value in its category. Don't miss out on this
Woom OFF 4
Get out and explore
The 20" woom OFF 4 is the perfect first mountain bike for kids age 6-8 years and height 46-51 inches. Whether they're taking on the pump track or exploring forests and fields, this superlight and sturdy bike will help them progress in their mountain biking journey. With high-quality components and tubeless-compatible rims and tires, the woom OFF 4 offers exceptional value in its category. Don't miss out on this opportunity to inspire and empower your young rider!
Woom OFF Air 4 comes with front suspension, 9 gears and disc brakes designed for children aged 6 years and over.
Geometry:
Tire/Wheel 20"
Handlebar height 31.5"
Steering Angle 68°
Top Tube Horizontal 18.1"
Wheelbase 33.5"
Seat Tube Angle 70°
Minimum Saddle Height 22.8"
Maximum Saddle Height 28.7"
Crankarm Lenght 4.33"
Handlebars adjustability Angle +/-15°; Height +/- 0.47″
Specification
Frame
Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes.
20″ wheels
Sporty handling: an easy-access low top tube, low centre of gravity and long wheelbase provide good balance and make for a fun, safe riding experience
Fork
Light carbon fork
1″ – 1 1/8″ baby taper shaft
100 x 15 mm through axles
Post mount for disc brake
Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes.
20″ wheels
Sporty handling: an easy-access low top tube, low centre of gravity and long wheelbase provide good balance and make for a fun, safe riding experience
Fork
Light carbon fork
1″ – 1 1/8″ baby taper shaft
100 x 15 mm through axles
Post mount for disc brake
Gears
9 speeds
SRAM trigger shifter
SRAM X5 derailleur
Headset
Fully integrated 1″ – 1 1/8″ headset
Sealed industrial bearings
Stem
Forged aluminum
CNC-machined
Handlebars attached via two clamps - +/-15° flip-flop design to adjust handlebar height
Length: 50 mm
Handlebars
Wide, ergonomically adapted and lightweight aluminum bars for more control
Sandblasted and silver anodised
Width: 580 mm
Rise: 20 mm
9 speeds
SRAM trigger shifter
SRAM X5 derailleur
Headset
Fully integrated 1″ – 1 1/8″ headset
Sealed industrial bearings
Stem
Forged aluminum
CNC-machined
Handlebars attached via two clamps - +/-15° flip-flop design to adjust handlebar height
Length: 50 mm
Handlebars
Wide, ergonomically adapted and lightweight aluminum bars for more control
Sandblasted and silver anodised
Width: 580 mm
Rise: 20 mm
Grips
Child-friendly thanks to small diameter
100% silicon for maximum grip
Child-friendly thanks to small diameter
100% silicon for maximum grip
Single-clamp grip to prevent twisting
Safety zone: extra rubber on the palm-facing portion of the grip for added comfort
Drive
Drive
Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor)
Narrow-wide chainring with 28 teeth in the front
assette with 11-32 teeth in the back
Flat pedals made from fiber-reinforced nylon
Chromoly axle and sealed, industrial ball bearings
Brakes
Hydraulic disc brakes from Promax
Disc diameter front/back: 140/140mm
Ergonomic brake levers designed for children's hands
Wheels
Brakes
Hydraulic disc brakes from Promax
Disc diameter front/back: 140/140mm
Ergonomic brake levers designed for children's hands
Wheels
Tubeless-compatible Alexrims wheelset
Aluminum hubs with sealed industrial bearings
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
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
Saddle
Ergonomically designed to fit children's anatomy
Side protection to lean against walls
Seatpost
27.2 x 250 mm
Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth
Seatpost clamp
Saddle
Ergonomically designed to fit children's anatomy
Side protection to lean against walls
Seatpost
27.2 x 250 mm
Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth
Seatpost clamp
Quick-release seatpost clamp for easy adjustments
Enclosed tools
4 mm hex key for stem and seatpost clamp
8 mm hex key for front wheel and pedals
Enclosed tools
4 mm hex key for stem and seatpost clamp
8 mm hex key for front wheel and pedals
Bike Weight
Bike weight: 18.5 lbs | OFF Air Bike weight: 20.9 lbs.
Max weight: 110 lbs combined weight of the Rider and cargo
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
4.2 ★★★★★
Based on 497 reviews
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Product Reviews
★★★★★ 4
keyboard and case is phenomenal, trackpad is borderline unfunctional
Color: Black
I bought this case, because of the keyboard and trackpad, i wanted to use my ipad more like a laptop. the keyboard is phenomenal and certaintly better than other cheap ipad keyboards i have tried, I can actually use this one without having to repeatedly slam or hard press certain keys and can actually have a flow of typing. additionally, everything else regarding the case itself is amazing. it isnt cumbersome or bulky and it is very easy to swap between ipad and laptop mode on the fly. the trackpad however is genuinely unusable. the sensitivity on the trackpad is horrid and I cannot figure out how to change it, and additionally, clicking using the trackpad is outright impossible. you try to left click, it registers as a right click, or you try to click and it instead snaps your cursor to the bottom of the screen instead. it is also impossible to use any gesture functions with the trackpad, even something as simple as scrolling up and down or left to right is impossible. it is outright impossible to have any kind of workflow using the trackpad. it is unfortunately just a lot easier to use the keyboard and touch screen! its a shame that the keyboard and case itself is very nice too, so I will now have to spend more money on a separate mouse, which is additionally ANOTHER item i will have to carry around, just to make what I already bought work the way I expected.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Great quality at a great price range!
Color: Navy Blue
Works very well for the day to day. Great quality at a great price range. Would definitely buy again if needed.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Solid case.
Color: Sky-Blue
Love this case. Fits great and the color is great! The keyboard is nice and it even has a little spot for a stylist.
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Reviewed in the United States on June 3, 2026
★★★★★ 4
Cheap and good
Color: Black, Color: Black
I chose the color black and it gives a really nice look, especially with the multicolor led lights around the keys. It is very easy to clean and you can shut off the keyboard to prevent any mess with the iPad. The magnet is very nice and keeps the keyboard in place. The keyboard doesn’t easily slip or anything so it holds the iPad very well. Only bad thing is that over time the iPad begins to scrape off the pain and it leaves your keyboard with some white spots all over :/ but if looks isn’t something that you care about, this is the keyboard for you. Don’t use it for gaming because there is a delay in functionality when you press a key and then try to use the pad. Also, you have to press the keys a bit harder than the usual keyboard. But for the price? This is a great item! Definitely worth my money
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Great quality at a remarkable price
Color: Navy Blue
I got an iPad and was looking for a cover to protect it. I came across this case that has a Bluetooth keyboard. It seems to be working great. It was less than $30 and had 4.5 stars with over 4k reviews.
The keyboard is magnetic and detachable, so I’ve got lots of configuration options. The keyboard pairs easily and allows you to use the iPad like a laptop. The point of an iPad a lot in one shot is kind of the touchscreen, but when I’m typing a lot of text as once (like now), it’s really nice to have a physical keyboard and touchpad. The keys are comfortably spaced and I’m comfortable typing on it. There is no additional setup for the keyboard besides pairing it to the iPad. At that point, all the cursor and keyboard features are immediately available.
The case is well built and has nice features like a slot to hold a stylus and multiple grooves to set your viewing angle. It’s configured to be used in landscape mode, but if for some reason you wanted to use it in portrait mode, you can pop the keyboard off to lay it flat. Especially for the price, this is an exceptionally nice iPad cover.
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Reviewed in the United States on May 8, 2026