Sidas Winter Custom Comfort Merino Insoles Size:Medium Chain whip features improved compatibility

Chain whip features improved compatibility with 7-speed to 12-speed mountain and road bike cassettes

Maximum bike weight is 50 lbs / 23kg per bike

30/60 hours of burn time (constant/ flash)

Size: 21 1/4'' - 24'' / 54 - 61 cm

yet rugged snowshoe package

Sidas Winter Custom Comfort Merino Insoles Size:Medium Chain whip features improved compatibilityComfort Merino insole provides unrivalled forefoot comfort while enabling you to maintain precision, stability and alignment. Ideal hybrid top cover : synthetics fibers will guarantee resistance and durability, the merino wool will reduce odor and assure an optimal thermoregulation.