Measuring 202mm x 202mm our white all board envelopes are perfect for protecting documents, papers and other thin items during transit and are perfectly sized for sending 7\" records. Featuring a peel and seal adhesive strip that offers a strong, secure, tamper-evident closure, our envelopes are ideal for sending sensitive documents too. Made from 400gsm solidboard, these envelopes offer excellent protection whilst still being lightweight enough that postal costs are not inflated; perfect for all your low-cost postal needs. Our all board envelopes are slick and smart-looking, and boast a wide range of eco-credentials; made from recycled, sustainably sourced materials, these envelopes are biodegradable, recyclable and plastic free. The clean white outer ensures these envelopes are highly presentable, professional and versatile, whilst the smooth surface bonds well with self-adhesive labels and can be printed on to help convey your brand for postal campaigns.