Ampac Lightweight Polythene Envelope 165x230mm C5 Clear with Panel (Pack of 100) KSV-LCP1. Made from 100% recyclable material, the Ampac Clear 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. With weight being kept as low as possible, it is never difficult to ensure you are getting the best value from your mailing. Tear-resistant. 100% recyclable polythene. Helps to save on postage costs. Peel and seal closure. Size: C5 (165x230mm). Pack of 100 envelopes. Clear with panel.