Adult sizing guide

Islabikes are carefully sized to ensure they are safe and comfortable to ride. To find out which Islabike is perfect for you please follow the guide below.

Take the following two measurements.

Inside leg:
  • The rider should stand with their back to a wall in socks, ensuring the feet are flat on the floor.
  • Place a book between the legs.
  • Slide the book up the wall until it contacts the crotch firmly.
  • Mark the wall at that point.
  • Measure from the mark straight down to the floor.
Height:
  • Place the book flat on the head.
  • Mark where the bottom of the book touches the wall and measure straight down to the floor.

Sizing table

Next, consult our size chart to determine which bike is most suitable. For further fitting advice please contact our customer services team who will be happy to discuss your measurements and advise on the most appropriate size. 

Beinn - Adult multi-purpose bikes

Model nameApprox min ageMin inside legMax inside legApprox height
Beinn XSAdult 65cm70cm145-153cm
Beinn SAdult 70cm 75cm 154-163cm
Beinn M
Adult 75cm 80cm 164-174cm

Janis - Adult road bikes

Model nameApprox min ageMin inside legMax inside legApprox height
Janis Extra Small
Adult 66cm 71cm 150-160cm
Janis Small 
Adult 71cm 76cm 157-167cm
Janis Medium
Adult 76cm 81cm 165-175cm
Janis Large
Adult 81cm 87cm 173-187cm

Jimi - Adult mountain bikes

Model nameApprox min ageMin inside legMax inside legApprox height
Jimi Small 
Adult 71cm 76cm157-167cm
Jimi Medium 
Adult 76cm 81cm 165-175cm
Jimi Large 
Adult 81cm 87cm 173-187cm

Joni - Adult multi-purpose bikes

Model nameApprox min ageMin inside legMax inside legApprox height
Joni X Small
Adult 66cm 71cm 150-160cm
Joni Small 
Adult71cm 76cm 157-167cm
Joni Medium 
Adult76cm 81cm 165-175cm
Joni Large 
Adult81cm 87cm173-187cm

e-Jimi - Adult electric mountain bikes

Model nameApprox min ageMin inside legMax inside legApprox height
e-Jimi Small 
Adult71cm 76cm 157-167cm
e-Jimi Medium 
Adult76cm 81cm 165-175cm
e-Jimi Large 
Adult81cm 87cm 173-187cm

e-Janis - Adult electric road bikes

Model nameApprox min ageMin inside legMax inside legApprox height
e-Janis Extra small
Adult66cm 71cm 150-160cm
e-Janis Small 
Adult71cm 76cm 157-167cm
e-Janis Medium 
Adult76cm 81cm 165-175cm
e-Janis Large
Adult81cm 87cm 173-187cm