1. Material: PE
2. Double-sided sealing, not easy to deteriorate
3. Moisture-proof and fresh-keeping, prolonging food storage time
4. Thickened PE material, strong and not easy to break
5. Double ribs strengthen the seal, can be washed and reused
6. Size: Small 12x22 cm, Medium 12x22 cm, Large 20x26 cm, Extra Large 28x27 cm
7. Weight: small size 20 grams, medium size 29 grams, large size 36 grams, extra large size 44 grams