Topwhere Fashion Maternity Tights Belly Thick Warm Tights For Pregnancy (Black) 60% cotton, 20% polyurethane filament,20% polyamide, free size; Function: Absorb sweat, Mention Hips, resistance and breathable, antibacterial. Suitable for pregnant women during 16 weeks to 28 weeks. Nine points on the foot thickening pregnant tights with chorionic villus inside keeps you warm throughout the winter. Simple design,foot tights but amazing energy.Unique, individual character,absolutely comfortable, absolutely beautiful.