Opened long underpants with thermal winter napped fabric. Thanks to its 100% combed cotton composition, all natural and breathable, it heats without retaining moisture, and is recommended for people with allergy or atopic skin problems. The waist and cuffs are adaptable and neither oppress nor deform with use. An ideal garment to wear both under trousers in days or places of very cold, and to sleep. Anti-pilling fabric. Premium quality.