Half socks: simply covers your toes and the ball of your feet for comfort without the bulk; Medium Size=Women Shoe Size 5-8 US; Large Size=Women Shoe Size 8-10 US Ultra low cut: almost just cover the toes or a little more. Elastic top line to minimizing slipping Sling back: elastic sling back helps the socks stay in place Sponge cushioned bottom: provides support and comfort for the ball of foot, moisture-wicking, relieve the discomfort caused by long walking No show: perfect for flats, slingback, pumps, high heels, dance shoes, canvas shoes, etc. Smooth, thin and sheer fabric, elastic and breathable Flammi Women's Ultra Low Cut Liner Socks with Sling Back No Show Padded Half Socks Half socks: simply covers your toes and the ball of your feet for comfort without the bulk Ultra low cut: almost just cover the toes or a little more. Elastic top line to minimizing slipping Sling back: elastic sling back helps the socks stay in place Sponge cushioned bottom: provides support and comfort for the ball of foot, moisture-wicking, relieve the discomfort caused by long walking