Polyester Elastic closure MATERIAL HANDSELCT Polyester with Softness and Comfy for Head wraping. SIZE: Fit for head size 21.7-23.7 inch,One size fit generous, With elastic in back with well stretches comfort to accommodate most head sizes. DESIGN: Slip-On Bandannas tied for easy slip on, Flowers Pattern Printed Chemo Scarves 3 Colors Variety PackedYellow&BLUE&PINK),Long Straps 10.5inch and Unique Elastic design stretches for a comfortable and easy fit.Slips on and off with easy; No tying necessary.To provide full coverage of hair loss as an alternative to other hats, turbans and wigs. FUNCTION: Full head coverage for women undergoing hair loss due to chemo treatments for cancer patients, Alopecia or other medical related condition to have a fashion beanie chemo hat head covers. Also available for night sleep to keep hair cover. SATISFACTION : You are complete satisfaction. If you are not satisfied with our services, please let us know and we will make it right.