Build your ideal FlexCore heated base layer system and save. Choose any two FlexCore heated base layer pieces to create the combination that works best for you. Whether you prefer a complete set for yourself or want to mix men’s and women’s styles, your bundle discount is applied automatically. Each FlexCore garment features dual-zone heating powered by GOBI’s lightweight rechargeable battery system, delivering warmth exactly where you need it while maintaining the comfort and flexibility of a premium performance base layer. Perfect for: Complete top and bottom systems Couples Gifts Mixing men’s and women’s styles Replacing individual pieces Bundle Includes FlexCore Men’s Heated Base Layer Shirt FlexCore Men’s Heated Base Layer Pants FlexCore Women’s Heated Base Layer Shirt FlexCore Women’s Heated Base Layer Pants Simply choose any two eligible FlexCore base layers, select your sizes, and enjoy bundle savings automatically at checkout.