The Lupin Hot/Cold Pack Hand Glove unique warming mitt is segmented with the grain stitched directly into the product. Fantastic for arthritis, rheumatism and general circulation. Our lupins bags with their gentle penetrating heat or cold, go deep into the muscles to help nature with the act of healing. By simply warming in the microwave or chilling in the freezer, the natural lupins will assist to sooth aches, pains, stress and hot flushes. The fabric is 100% natural cotton corduroy. Lupins are widely regarded as a “low allergy” alternative to wheat and are more resistant to moisture (to make cleaning easier) and less weight for more comfort.