Designed to protect frame top tube

The E-Thirteen PF30 (Press Fit 30) Bottom Brackets space the bearings wider than your traditional PF30 BB's

3 - Dual Compound - Double Down - TR Kevlar Folding - 940g

Tannus recommends these sized tubes with their inserts:

Evoc Long Socks - S-M - Black - Carbon Grey PDP|PLP|Rail Material Designed to protect frame topFeaturing a mid calf cuff and perfect shock absorption characteristics, the Evoc socks long socks offer enhanced wearing comfort during sports. If you looking for a new pair of warm socks with style these are the socks for you. Features: Padded toe and heel section Mesh upper for maximum breathability Arch stabiliser for perfect comfort Materials: 80% Cotton 18% Polyamide 2% Elastane