The L size is recommended for medium-sized dogs that have a sturdy build. The neck and cuffs fit gently, and the design also considers ease of movement. Size Guide: ・Chest: Approximately 45cm ・Back Length: Approximately 35cm ・Recommended Weight: Approximately 8-12 kin (about 4-6kg) ※The color may differ slightly depending on the lighting, but the color is closest to the first image!