The sponge is based on the highest grade DT sponge manufactured by National Rubber Co., Ltd., Japan's largest rubber manufacturer, which is used by both famous overseas and domestic brands. The outer jersey for the side gussets, crotch gussets, hip area, and back of the knee area uses a super stretch jersey (relaxation jersey) developed jointly with a famous domestic textile company, offering excellent texture and elasticity. The suit's brushed lining uses a top-grade brushed material, one of the best in Japan, known for its quick-drying, athletic, and heat-retaining properties, as well as its cost performance. For semi-dry suits, an inner neck is standard equipment for more comfortable surfing. (Notes) The stretch long zipper is very delicate. When putting on or taking off the suit, please open and close it gently, ensuring the slider does not get caught in the material, to avoid putting stress on the zipper. We are committed to meticulous craftsmanship to ensure customer satisfaction. #surfing #wetsuit #semidrysuit #fullsuit #longjohn #backzip #nonzip #chestzip #longchestzip #airflameboost Measurement Details: 1 Height 2 Weight 3 Neck Circumference 4 Shoulder Width 5 Upper Chest Circumference 6 Waist Circumference 7 Hip Circumference 8 Back Length 9 Sleeve Length 10 Bicep Circumference 11 Elbow Circumference 12 Forearm Circumference 13 Wrist Circumference 14 Inseam 15 Below Knee Circumference 16 Calf Circumference 17 Ankle Circumference (Notes) 1. Please understand that we cannot accept cancellations, returns, or exchanges due to customer convenience. 2. If you have any questions, please ask them before purchasing. We are closed on weekends and holidays, so replies to your questions may be delayed. We appreciate your understanding. (Re-Important Notes) We kindly ask that meticulous and nervous customers refrain from purchasing. To prevent issues, we may refuse to sell based on the provided measurements. We appreciate your understanding in such cases. The delivery time is approximately 21 days, excluding weekends and holidays, from the day after your purchase. Please ensure accurate measurements are taken while wearing swimwear or underwear. We are not responsible if the size does not fit after the suit arrives, so please purchase at your own risk.