Made from 100% recyclable material, the Go Secure grey lightweight polythene envelope is ideal for people that care about the environment as much as their business. Designed to be durable and tough, the polythene construction prevents ripping and tearing when in transit, keeping your contents as safe as possible. This 100 pack of envelopes measuring 335 x 430mm are opaque in colour for confidentiality with a peel and seal closure.