Swim Secure Waterproof Bum Bag mallet lace Bottom bracket: BSA 68mm

Bottom bracket: BSA 68mm

Castelli's innovative drop-tail pocket construction

Featuring NB DRY moisture-wicking technology and easy-access pockets for valuables

while the pants use a mountain-bike-specific fit to leave room for knee guards

If you love to go fast and far on the trails

Swim Secure Waterproof Bum Bag mallet lace Bottom bracket: BSA 68mmSitting snug on the waist, this waterproof bag has no drag for swimmers and weighs a minimal amount so as not to be noticed while being worn, making this the perfect waterproof bum bag for swimming and all outdoor activities. The waterproof triple seal makes this ideal to carry your smart phone, electronic car keys and valuables.