Feather soft ridges protect wine glasses, goblets and china - even delicate crystal, while drying. Special "air-flow" texture allows interior of glasses to dry completely which prevents condensation and water spots. Non-skid surface keeps mat in place. Rolls up easily for storage. Holds up to eight wine glasses. Also perfect for drying fine crystal pieces. Eight-glass size measures15.7" x 7.9"; twelve-glass size 15.7" x 11.5".