Prym ergonomics crochet hooks make crocheting simple and easy on your joints. Made of special high quality synthetic materials, the crochet hooks are extremely lightweight and are warm in the hand. The highly polished shafts and hooks guarantee comfortable crocheting and easy sliding of the stitches. The grip of the crochet hook for wool is also unique because its ergonomic design and sure handling make for pleasant and fatigue-free working. It consists of a non-slip plastic material which gives the crochet hook the necessary grip. Color code at the upper end of the grip identifies the hook size.