NIP Heattech Maternity Leggings Size Med Waist 30-44inch Hip 39-42inch - High-performance fabric with insulating, bio-warming, moisture-wicking, quick-drying, odor control, moisturizing, anti-static, and shape-retaining technology. - Textured stretch fabric. - HEATTECH fabric. - Minimal seams for a smooth feel. - Super stretchy fabric provides gentle support without constriction. - Non-elastic waistband for a comfy, relaxed fit. - Full-length leggings that will stay perfect throughout your pregnancy. - Updated with DRY technology for a stay-fresh feel.