These cotton tabi socks have four hooks and are designed to reduce pain when kneeling, with cotton padding on the instep. Materials: Outer = 70% cotton / 24% polyester / 6% polyurethane, Padding = 100% polyester, Lining = 98% cotton / 2% polyurethane, Sole = 100% cotton Four hooks, bleached lining These are used, and the big toe area is particularly worn. The inside of the tabi has been washed clean each time, so it's relatively clean. There are identifying letters written on the lining. The tabi lining is 100% cotton, so the sound of them on tatami mats is pleasant. Would these be suitable for work or for practice in activities like dance?