100% Cotton Pull On closure Premium Cotton Undershirt: With elaborately selected cotton fabric, this David Archy Men??s V neck undershirts are soft, breathable that good as base layer, undershirts or just T-shirts. Stay-Tucked Undershirts: suitable length for stay tucked; flat stitches for seamless feeling when wearing under the business shirts or jackets. Lay Flat V-Neck Collar: With good shape retention, this men’s undershirts pack keeps its shape after being washed; V-neck design is invisible when one button undone, perfect as outerwear or underwear. Moisture-wicking: V neck undershirts for men features to moisture-wicking and good air permeability, keep you all-day fresh and clean. Note: We are upgrading the collar, so you may receive the one different from the previous version (only for white-4 Pack cotton undershirts). Sorry for the confusion. But they are the same good.