Using 2XU's revolutionary 10:8 Membrane (mid layer) delivering waterproofness of 8,000mmH2O making the penetration through the fabric face through any conditions, from a shower to a snow storm impossible. Coupled with a moisture vapour release <br /> (M/P 10,000gm/m2/24hrs) specifically designed to avoid moisture buildup when you are working out and Velo-pro back and side panels the UC1207a will keep you comfortable in all conditions.<br /> Designed with all the pockets you need to hold valuables, tubes and gels and the perfect fit while reaching down on the bars.