The basics Dritz Slip-Stop Thimbles protect your thumb from accidental needle pricks while you sew. The benefits Features a safety ridge on top, which prevents needles from slipping off your finger. The uses Specially crafted from nickel-plated zinc, this slip-stop thimble is a must-have for all quilters, sewers, dressmakers and designers. The bottom line Available in a variety of sizes to suit your needlework needs.