Double-sided Fleece Acrylic Fabric: Comparable to cashmere in heat-retention with fleece on both sides; close-fitting style does better in retaining body heat to keep you warm.
Ultra Soft: ultra-soft & smooth fleece fabric of the baselayer caresses the skin so naturally providing maximum comfort and softness.
Double-layer Knee panel: Thoughtful design for sleepwear bottom; more warmth, more durable; special care for your sensitive knee joint.
Functional Fly: Considerate design on the thermal bottom with fly opening for easy-go when nature calls
Additional Crotch Lined: Providing more room, reducing restraint & friction in your intimate area to facilitate movement freely.