US Rubber Swim Cap, Circa 1960 | The Vintage Traveler
Amazon.com : 2 Pcs Lace Vintage Swim Cap Flower Floral Petal Retro Style Bathing Caps Pink Black Women's Long and Short Hair Swimming Hat Not Waterproof : Sports & Outdoors
Vintage Swim Caps - Their History and Some Clever Uses - ThirdShift Vintage Blog