These padded envelopes are a great, sustainable packaging alternative to traditional, plastic bubble mailers. Our Composd envelopes are made of two easily separable layers. The inner layer is made of unused sheep's wool which is naturally water-repellant and resistant to extreme temperatures; the outer layer is composed of 100% recycled paper. Be sure to insert your items in the inner layer. Due to their soft and strong interiors, our padded envelopes are great for packaging any goods, especially delicate items! It's the perfect alternative to bubble wrap and plastic poly mailers. The envelopes have a peel & seal closure and are available in 3 sizes.