Warm and cosy, our Thermal Base Layer Set is engineered for ultimate comfort and performance. Crafted from polyester knitted fleece back fabric, you'll stay warm on your outdoor adventures. Reach Technology with underarm gussets provide unrestricted movement. The internal elasticated waistband ensures a comfortable fit. Pop underneath outer layers during cold climates. The Thermal Base Layer Set from Regatta is meticulously crafted for warmth on the go. The polyester knitted fabric with a fleece back offers lasting warmth. The top is engineered with Reach Technology providing unrestricted movement during outdoor adventures. The internal elasticated waistband on the bottoms ensure a comfy and secure fit.