Sizes and Lining Materials (ᴗ͈ˬᴗ͈) ☆ L size: Approximately 7.5-8cm ☆ M size: Approximately 7-7.5cm ☆ M/S size: Approximately 6.5-7cm ☆ S size: Approximately 6-6.5cm ☆ SS size: Approximately 5.5-6cm Lining Fabric: ① "Mesh" fabric: Absorbs moisture, has antibacterial and deodorizing effects. Feels good against the skin and is refreshing. ② "Sarasara" fabric: Has moisture absorption and release properties, suppressing stuffiness and stickiness. * Only available in orange and navy. ③ "Double Gauze": Gentle on the skin, with high absorbency, heat retention, and breathability. A skin-friendly material. ④ "Antibacterial Double Gauze" +30 yen (back side only): Anti-mold, antibacterial, deodorizing, and antimicrobial. High-quality, 100% cotton, made in Japan double gauze. ⑤ "Smooth Knit Quilt": Excellent breathability and heat retention, and durable. The stitching has no sharp corners, so it doesn't prick the skin. It resists shape loss and has a fluffy, soft finish. ⑥ "Smooth Knit": Comfortable against the skin, with excellent breathability and heat retention, and durable. Has a fluffy and soft finish. ⑦ "Organic Knit": Gentle on the skin and has excellent moisture absorption and breathability. ⑧ "Waffle Knit": Antimicrobial treatment, absorbent, and quick-drying. Extremely durable to washing. ⑨ "Nanomix": 15% +30 yen, 36% +50 yen, Mesh +50 yen. Effective for dry, sensitive skin, sweat-wicking and quick-drying. Improves comfort by keeping you cool in summer and warm in winter, and has excellent deodorizing effects. ⑩ Cooling Mesh: "Cooling Mesh" fabric with breathability, moisture absorption and diffusion, and a cooling touch. Cushioning Material: ① Domit cotton or fluffy quilted cotton that resists shape loss. * Varies depending on thickness. ② 100% Linen Quilted Cotton +30 yen: Excellent moisture absorption, quick-drying, and breathability. Efficiently absorbs and releases heat. Soft finish. ③ Organic Cotton Quilt +30 yen: Uses 100% natural cotton. Excellent moisture absorption, absorbency, and heat retention. Soft finish. ④ Antibacterial Double Gauze +30 yen