Our 343 x 343mm - Solid Board 12" LP Vinyl Record Mailers are the perfect size for sending 12” vinyl records as well as other slim items such as documents and cards in a way that is both secure and eco-friendly. They’re 100% plastic-free, recyclable, biodegradable and made from recycled materials. Their peel and seal adhesive closure makes sending vinyl records quick and easy and eliminates the need for packing tape with its secure tamper evident closure. Made using extremely strong 400gsm solid board they help to minimise the use of plastic and other new materials in our packaging supply chain with these cardboard mailers, your customers will thank you and so will the planet!