JUST RIGHTThese arm skins are light but provide surprising protection for the weight. We find ourselves using them more & more often because theyre warm enough but you dont really feel them on & if you do peel them off they take up about half the space in the pocket of normal warmers. Seamless construction eliminates stitching Ultralightweight UV protection for the bike & run Seamless construction makes these arm skins practically disappear & gives you one less thing to think about on race day