L'Amipino Couture The size is listed as K, but it's quite small, and I think it's a KSS size. My KS-sized dog found it too tight. Soft fabric, yellow and off-white striped long-sleeved dog wear. L'Amipino Couture Border Boat Neck (with sleeves) Colorful Color: Lemon Size: K [Neck 22-25cm / Chest 36-40cm / Length 30-34.5cm / Weight 3.5-4.0kg] Material: Front and back: 100% cotton Ribbing: 97% cotton, 3% polyurethane Home cleaned The material is 100% cotton. It doesn't use any synthetic fibers, so it feels good on the skin and has excellent absorbency. It's lighter than the autumn/winter border design. It uses off-white instead of pure white, so it's not only less likely to show dirt, but it also blends well with the dog's fur color. ★K3S / 23 / 31 / 19 / 28 ★KSS / 24 / 35 / 20 / 30 ★KS / 25 / 37 / 22 / 31.5 ★K / 26 / 39 / 23 / 33 ★KM / 28 / 41 / 24 / 34.5 - Thank you for looking.