This HEAPSGOOD Rigid Mailer is created from 400gsm matte-finish thick paper board. Made from recycled material and FSC certified, it's an eco-conscious protective packaging envelope. It comes with expandable edges and hard corners to keep your item safe and secure. 

Features:

• 400gsm thick paper board
• Made from recycled material
• Sourced from sustainably managed forests
• 100% recyclable
• Expandable edges for better protection
• Easy open strip
• Horizontal orientation for easy packing bulky items
• Water-resistant
• Small and Medium sizes can be used as AusPost Large Letters (before the gusset is expanded
• Box of 25
• Size: 350 x 250 mm
• Expandable side gusset measurement: 350 x 250mm - 5cm