Extra Strong 160 x 230mm Polythene Envelope

One 160 x 230mm polythene envelope feature a peel-and-seal closure for secure packaging. 

They are lightweight yet highly durable, with a surface designed for easy writing. Resistant to weather and tearing, these recyclable envelopes provide reliable protection for your mail.

Letter size if less than 5mm thickness or Large Letter Size when filled over 5mm