Comfortable and easy care vest of 100% polyester fleece has 8 pockets for warming pack inserts. Zipper closure. Machine washable. Royal blue. (Warming packs, Part No. 8625, sold separately). Replaceable warming packs are easily secured in pockets on the inside of the head/neck band and vest. Made in the USA, the packs heat on contact with air and stay warm for up to 10 hours. All natural ingredients wont harm the environment. Available in 3 sizes: Standard - 34" - 44" chest, XL - 46" - 48" chest, and 2XL - 50" - 52" chest.