Gore Bike Wear Men&#39;s Oxygen IV Jacket, Azur Blue/Silver Grey, Small SHELL:100% Polyester/ GORE-TEXMEMBRANE/ STRETCH:94% Nylon/ 6% Elastane/ GORE-TEXMEMBRANE/ Imported GORE-TEX Paclite Shell GORE-TEX Paclite Shell SHELL: 100% Polyester with a GORE-TEX Membrane; INSERT: 94% Nylon, 6% Elastane with a GORE-TEX Membrane Machine wash warm. Permanent press cycle. Do not bleach. Tumble dry at low heat at permanent press settings. Dry or steam iron low. Wash with similar colors. Wash inside out. Drycleaning not recommended.