What Is Reed Grass Straw? Products Materials: 100% natural grass from Long An and Kien Giang Province, Vietnam 100% natural size and colorFor best results and longevity of products, store in a cool and dry place up to 12 months. Specifications Length:1 1 – 15CM (NO KNOT)15-20 CM ( 1 KNOT)Radius:4-9MM (MEDIUM)9- 13MM (LARGE) Production Process Grass Harvest Cut and Classify Smooth, clean in/outside Boil UV Treatment Machine Dry Inspect Packing Waste grass is crushed into compost and water is reused for farming.