hand warmer cover 1.nice covers for hot & cold packs, to keep warm 2.Can be made in knitted,fleece ,plush 3.EN71,REACH,MSDS 1. OEM available, with any shape2. Sample free3. Can be reusable many times4. Can be with a cover, such as knitted or fleece5. Instant heat up to about 52 degrees when activated6. Made in Yangzhou, China .