These 100% recyclable Purely Packaging paperboard-back envelopes by Blake are strong and rigid, made with high quality recycled materials. The mailers safely protect items such as certificates, photos, and prints, whilst their recycled content helps to make a positive Contribution to the environment. Make a difference to your mail with these Purely Packaging Board Back envelopes by Blake Heavy Duty Board Back to protect certificates, photographs, prints and more Strong Peel & Seal closure for ease of use, additional security and longer shelf life Printed 'Please do not bend' on the face for extra safety Size 4 1/2 x 6 3/8 in Color Manilla Style Pack of 250 Occasion Office Brand Name Blake Item Shape Rectangular Model Name Pack of 250 Unit Count 250.0 Count Item Weight 3.31 Kilograms Closure Type Self-Seal Manufacturer Blake Material Type Paper Occasion Type Anniversary, Birthday, Graduation, Wedding Item Type Name Purely Packaging C6 162x114mm Board Back Envelope Box of 250 Number of Items 250 Additional Features Heavy Duty Item Dimensions L x W 6.38 L x 4.5 W Recommended Uses For Product Invitation Card, Letter Global Trade Identification Number 05055559753384