Osprey Siskin 8 Men's Hydration Pack - One Size Black MFPN=041A620ICA011 Slick tire with traction grooves

Slick tire with traction grooves for on-road riding

Fits all TWIST bases

60 Tire Compound MAGI-X Tire Width 2

The longest distance lowest profile widest cutaway Butterfly with something extra: Poron XRD

Osprey Siskin 8 Men's Hydration Pack - One Size Black MFPN=041A620ICA011 Slick tire with traction groovesThe Siskin Men's hydration pack is a svelte option for those who want to carry just enough gear the Siskin Series is a high performing mountain bike pack that provide stability and comfort on every trail. Multi pocketed tool organization and large bucket main compartment stores and protects all your essential gear. Airscape Suspension allows dynamic body movement and distributes load across entire back panel Airscape back panel Mesh covered extra deep