Slip-On Slinky-Caps for Women with Chemo Cancer Hair Loss Designing Headwear in the USA for Hair Loss for over 22 years. Our Caps offer Full Head Coverage and Fullness to Disguise Hair Loss from Cancer Chemo Minimal and Soft Seams ideal for Sensitive Scalps - Won't itch or scratch. (Specific about this cap) 100% Cotton from Hand Picked Quality Fabrics One Size Fits Most - Stretches to accommodate most head sizes.