Not all days are spent riding aggressive terrain. Like freshly groomed resort corduroy, the Oakley mod3 was designed with smooth lines. The mod3 has an in-mold shell, the lightest construction method in the industry, as well as the modular brim system (mbs) for seamless helmet and Goggle Integration. The clean aesthetic is amplified with premium internal features, including a boa fit system with 270 digress of adjustment, a fid lock magnetic buckle providing the convenience and functionality of one-handed use while wearing gloves. The mod3 is the go-to for all-mountain riders wanting to look good and ride comfortably all day. Sizing: Small = 51-55cm medium = 55-59cm large = 59-63cm mbs Goggle compatibility: Small brim = a-frame 2. 0, crowbar, open-frame 2. 0 XM, open-frame 2. 0 XS, e-frame, wind jacket 2. 0 large brim = airwave, airbrake XL , airbrake, Flight deck, Flight deck XM , canopy, line miner & O frame 2. 0 XL.