Treets Hot Body Wrap Flaxseed Heat Pad. This 100% natural Treets Hot Body Wrap Flaxseed Heat Pad has a soft, breathable cotton outer and contains flaxseed, which heats and retains its temperature brilliantly. The fine seeds also allow the wrap to conform to the shape of your body in order to conduct its heat most effectively. And buy this Treets Hot Body Wrap Flaxseed Heat Pad Now £19.99.