A little dubious about buying partially because of the cost and secondly because I didn't think it would work. WRONG - heat regulation is brilliant and overall well worth the cost so much so that we've placed another order for a winter SK and 2 pillows!. Downside - bit smelly, need to air before using, and the cover is a little noisy. So glad to be supporting our own farmers and business and delivery was amazing. Thank you Baavet keep 'em coming.