Material: Wool. Designed in the style of a "Kainokuchi" (clam shell) and handmade. The fabric is light, so I don't think there will be any pressure when wearing it. Please enjoy it with casual outfits like Tsumugi or Yukata. It can be used all season. Easy to put on with the included spatula! All handmade, so thank you for your understanding. No smokers, no pets. Thank you for looking.