The jacket is made of 750 gsm (gram per square meter) pearl weave with double diamond weave on the lower part. The pants are made of 10 oz twill cotton with a diamond pattern. The gi’s collar is made of EVA-foam to prevent sweat and bacteria absorbing into the collar. Belt is sold separately. – Jacket 750 gsm pearl weave with double diamond weave skirt. – Pants 10 oz twill cotton with a diamond pattern. – “You Can’t Teach Heart” print inside the jacket. Please note that the wingspan on the is a little bit longer than Hyperfly Starlyte II and Hyperlyte 2.5. Please read size guide and washing instructions below. If you have any questions, please contact customer service . Also read the Rebelz Ultimate BJJ Gi Guide for advice and tips.