NEMO International Martial Arts Belts are made of 65% Polyester and 35% Cotton fabric for long time uses. It is also available in various sizes from 000 - 8. - Brand New and Official Quality - Ideal for Taekwondo, Karate, Judo - Durable and Comfortable - Tie twice around the body with a knot in front - Size: 6.25" - 10" (ft) and 1-3/4" wide - 65% Polyester, 35% Cotton Fabric Size Chart (Please check before purchase) Uniform Size 000 : Clothing Size 2-4 (Child) / Height 3"-3".5" / Weight 30-40 lbs Uniform Size 00 : Clothing Size 4-6 / Height 3".5"-3".10" / Weight 40-55 lbs Uniform Size 0 : Clothing Size 6-8 / Height 3".10"-4".3" / Weight 55-70 lbs Uniform Size 1 : Clothing Size 8-10 / Height 4".3"-4".8" / Weight 70-90 lbs Uniform Size 2 : Clothing Size 10-12 / Height 4".8"-5".1" / Weight 90-100 lbs Uniform Size 3 : Clothing Size Adult Small/ Height 5".1"-5".6" / Weight 110-140 lbs Uniform Size 4 : Clothing Size Medium / Height 5".6"-5".11" / Weight 140-170 lbs Uniform Size 5 : Clothing Size Large / Height 5".9"-6".2" / Weight 170-200 lbs Uniform Size 6 : Clothing Size X-Large / Height 5".9"-6".2" / Weight 200-230 lbs Uniform Size 7 : Clothing Size XX-Large / Height 6".2"-6".5" / Weight Over 230 lbs Uniform Size 8 : Clothing Size XXX-Large / Height Over 6".5" / Weight Over 230 lbs This chart is provided as a courtesy, not as a guarantee that it will fit.