The double layer really does trap heat—my legs stayed toasty on a windy walk when my top half was freezing. They're midweight but not bulky, so they fit fine under my work trousers.
Henry★★★★★
Wore these under jeans on a 20-degree morning and my legs never got that cold, clammy feeling. The dual-layer jersey knit is thicker than my old thermals but still moves with me, and they don't bunch up at the knee.
Evelyn A.★★★★★
The double-layer knit really does trap heat—I wore these on a freezing morning walk and my legs stayed toasty the whole time. The fabric feels soft against the skin, not scratchy like other thermals I've tried.