Multi-size Clear Window Stand Up Ziplock Heat Seaablel Bags 3.15mil Odor Proof Resealable Pouches Herbs Spices Coffee Tea Snacks Food Storage Plastic Poly Wrapping (50, 3.9''x5.9'') We ship the package to USA via ePacket, normally the estimated delivery time is about 15-20 days If you order above $80 one time, we will ship out the package via DHL, the estimated delivery time is about 4-7 business days DURABLE MATERIAL-- Thickness: 3.15mil (one side) Design by clear window, zip lock, stand up and tear notch--For extended storage time, you can heat seal above the zip lock! The tear notches enable access even after heat sealing MULTIPURPOSE USE-- Perfect for coffee, beans, candy, sugar, rice, baking, cookie, tea, nuts, dried fruit, dried flowers, powder, snack, kinds of powder, dried fruit, medicinal materials, medicine, grain cereals, chemical products, leisure food, decorations, electronic components, cosmetic and so on!