【Specifications】Easy-to-flip word cards, usable with one hand. 【Features】Insert index finger into the cover pocket to secure, and lift the cards with your thumb in the notch for easy one-handed flipping. 【Materials】(Cover/Inside paper) Paper, (Ring) Nylon 【Size】(Memo section only) H90 x W35 x D17mm, (Ring size) Ф25mm There is no product description.