Mail Lite Plus Oyster envelopes have an outer kraft lined with barrier-sealed bubble, offering the perfect solution for ultimate protective mailings. Use Mail Lite Plus Oyster for tools, parts, clothing, CD's, DVD's, brochures, books and many other commercial mailings. Mail Lite Plus Oyster envelopes are perfect for soft or unbreakable items. Peel n' Seal closure for speed, and easy opening strip. Use in conjunction with additional bubble wrap for extra protection. Sizes shown are internal dimensions. When choosing a size, pick an envelope approximately 1/4 larger than the size of the item you are sending. Ideal for heavy or fragile items.