Materials: 92% Polyester

Chain retention technology: These chainrings use absoluteBLACK's unique narrow-wide tooth profile for optimal chain retention

Combined with breathable Ariaprene neoprene and a moisture-wicking back panel

The Skyline Air Short offers the same best-selling fit and features of the Skyline Short

SRAM PC-XX1 Eagle Hollow Pin 12 Speed Chain - Copper - 12 Speed Dropship Materials: 92% PolyesterThe engineers at SRAM have put a huge amount of fanatical detail into every aspect of the XX1 Eagle chain to make to provide you with the ultimate combination of consistent performance, uncompromising strength, ultra light weight, and silky smooth, whisper quiet operation. These chains don't just look super fancy but they are loaded with features that make them the quietest, strongest, and most wear resistant chain you're likely to find anywhere.