This baby keeps your spine gooey and your body temperature high through any workout. You could workout nude in the dead of winter and the yummy fleece lining and polypropylene shell will keep your back muscles happy even when you take a break.

Bonus feature: the pocket in the back can be used to hold a heating pack for extra hotness, or an ice pack for those days when a little anti-inflammatory action is necessary. Heat and ice packs not included.

Back warmers are a must-have for the adventuresome back-bender to extend your backbending sessions by reducing muscle cramping and soreness that comes with chills. They also help you warm up faster by keeping your body heat from escaping.