
Giro
Register II MIPS
Everyday adult helmet with MIPS and a simple dial fit.
Universal Adult, 54–61 cm
View on AmazonPrice and availability on Amazon
AVASTA is a Zhejiang brand selling entry-level mountain, hybrid, and kids bikes, mostly through its own site and Amazon. The parent factory in Zhuji builds urban and trail bikes for export. Charts on this page are AVASTA’s mountain, hybrid, and kids ranges. Listings often use one frame per wheel size, so check saddle height on the bike you will actually receive.
Official website →Height ranges compared
Used sizes share one height scale, so overlapping and identical ranges are visible before you read a single table.
Height ranges on this page, from 133 to 192 cm. 24" Wheel (Youth/Petite): 137–160 cm. 26" Wheel: 160–178 cm. 27.5" Wheel: 168–188 cm.
Height ranges on this page, from 148 to 192 cm. 26" Step-Through (Women): 152–173 cm. 700C / 15" Step-Through (Women): 155–170 cm. 700C / 17" Step-Through (Women): 168–183 cm. 700C / 19" Step-Over (Unisex): 168–188 cm.
Height ranges on this page, from 100 to 169 cm. 18" Wheel (ages 4-9): 104–135 cm. 20" Wheel (ages 6-12): 114–150 cm. 24" Wheel (ages 9-14): 130–165 cm.
Pick the category that matches the bike, then confirm the exact model.
| Size | Height | Inseam |
|---|---|---|
| 24" Wheel (Youth/Petite) | 137-160 cm | 64-76 cm |
| 26" Wheel | 160-178 cm | 73-84 cm |
| 27.5" Wheel | 168-188 cm | 76-88 cm |
Size
24" Wheel (Youth/Petite)
Height
137-160 cm
Inseam: 64-76 cm
Size
26" Wheel
Height
160-178 cm
Inseam: 73-84 cm
Size
27.5" Wheel
Height
168-188 cm
Inseam: 76-88 cm
| Size | Height | Inseam |
|---|---|---|
| 26" Step-Through (Women) | 152-173 cm | 71-81 cm |
| 700C / 15" Step-Through (Women) | 155-170 cm | 71-79 cm |
| 700C / 17" Step-Through (Women) | 168-183 cm | 76-86 cm |
| 700C / 19" Step-Over (Unisex) | 168-188 cm | 76-88 cm |
Size
26" Step-Through (Women)
Height
152-173 cm
Inseam: 71-81 cm
Size
700C / 15" Step-Through (Women)
Height
155-170 cm
Inseam: 71-79 cm
Size
700C / 17" Step-Through (Women)
Height
168-183 cm
Inseam: 76-86 cm
Size
700C / 19" Step-Over (Unisex)
Height
168-188 cm
Inseam: 76-88 cm
| Wheel size | Height | Inseam |
|---|---|---|
| 18" Wheel (ages 4-9) | 104-135 cm | 47-63 cm |
| 20" Wheel (ages 6-12) | 114-150 cm | 53-70 cm |
| 24" Wheel (ages 9-14) | 130-165 cm | 60-78 cm |
Wheel size
18" Wheel (ages 4-9)
Height
104-135 cm
Inseam: 47-63 cm
Wheel size
20" Wheel (ages 6-12)
Height
114-150 cm
Inseam: 53-70 cm
Wheel size
24" Wheel (ages 9-14)
Height
130-165 cm
Inseam: 60-78 cm
Helmet, light, lock, bottle, and a pant-leg strap. Size the bike here; buy the complete adult bike at a shop.

Giro
Everyday adult helmet with MIPS and a simple dial fit.
Universal Adult, 54–61 cm
View on AmazonPrice and availability on Amazon

NiteRider
Compact USB headlight for commuting and dusk rides.
Handlebar mount, 300 lumens
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Kryptonite
Hardened U-lock plus a cable for wheels or a locked-together pair.
Fits most road, gravel, and hybrid frames
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CamelBak
Insulated squeeze bottle for everyday rides.
Fits a standard ~73 mm cage
View on AmazonPrice and availability on Amazon

Green Guru
Upcycled inner-tube strap that keeps a pant leg off the chain.
Adjustable hook-and-loop, about 16 in long
View on AmazonPrice and availability on Amazon
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Height filters the chart. Cycling inseam decides which overlapping size to keep. The method is the same for every brand.
Height
Take shoes off and stand tall, looking straight ahead. A helper should rest a flat object on the crown of your head, then run a tape from the floor to the underside of that object. Save the number in inches and centimeters — charts use both.
Inseam
Stand tall and barefoot with feet slightly apart. Ask a helper to measure vertically from your crotch to the floor. Keep your legs straight and feet flat.
Need the full sequence, including between-size rules? See how to choose a bike size.
Use your height on the Mountain, Hybrid and Kids charts on this page. On the mountain table, 160-160 cm sits in both 24" Wheel (Youth/Petite) and 26" Wheel. Cycling inseam and standover pick the side. Then check stack and reach for the exact Avasta model.
Not safely. Avasta Mountain, Hybrid and Kids charts on this page are separate. A Avasta 24" Wheel (Youth/Petite) on the mountain table and a Avasta 26" Step-Through (Women) on the hybrid table are not interchangeable.
The Mountain, Hybrid and Kids charts on this page include 24" Wheel (Youth/Petite), 26" Wheel, 27.5" Wheel (137-188 cm on the mountain table). Verify the current Avasta model chart on the official site before purchase.
Sources
Brand-level ranges on this page are compiled from published size data. Confirm the current model chart before you buy.
Related charts
Bike size chart
General height and inseam ranges before you lock a brand label.
Mountain bike size chart
Compare Avasta MTB sizing against trail and hardtail fit ranges.
Hybrid bike size chart
Compare Avasta hybrid sizing against commuter and fitness bike ranges.
Kids bike size chart
Check Avasta youth sizing against wheel-size and height ranges.
All brand size charts
Compare this brand with other bike brand size charts.
How to choose a bike size
Measure height and cycling inseam, then confirm standover and reach.