Swiftwick Pursuit Crew Socks - 7" Black Large Cage-Medium The Pump Bag has four

The Pump Bag has four mounting grommets that mate with the B-RAD 3 or 4 base

then it will protect your chain in all riding conditions and allow you to ride longer between applications

Welded 30mm rim is tubeless ready allowing the running of lower pressures for improved traction without sacrificing durability

Easy on/off attachment straps (don't have to take off shoes)

Swiftwick Pursuit Crew Socks - 7" Black Large Cage-Medium The Pump Bag has fourCrafted with Merino wool Pursuit provides warmth in the winter and cooling in the summer and absorbs moisture without feeling soggy. Pursuit features a reinforced heel and toe and extended heel pocket to maximize durability. Natural Merino moves moisture away from your feet keeping them dry odorless and blister free Temperature control keeps you warm in winter and cool in summer Pursuit socks are certified to the Responsible Wool Standard (RWS). The