Lightweight and warm, with a comfortable softness that conforms to the body. Thin, so it won't show under outerwear. Doesn't get stuffy! So you can wear it all year round. Doesn't constrict! Excellent heat retention! So it's also recommended for pregnant women♪ Silk has proteins (natural ingredients) that are very similar to human skin. The original cocoon is a warm material, said to maintain a space where the larvae can grow without freezing even in sub-zero temperatures. ~Features of the versatile material, silk~ ・Highly moisturizing, leaving skin supple♪ ・Excellent absorbency and moisture release, so it's comfortable all year round without getting stuffy! ・Natural material that's safe for sensitive skin ・Thin yet stretches firmly and fits the body flexibly. ■Material Silk Polyester Polyurethane ■Size (approx.) [Body] 29 x 25 x 0.4cm [Suitable Waist] 50-90cm ■Weight (approx.) 50g ■Color ・Red ■Made in Japan