All dimensions quoted are internal dimensions. A box of 300 size BP4 bubble pouches, size 230mm x 285mm. Also known as plain bubble bags, these pouches are made from 50gsm bubble wrap and are highly effective at protecting items during storage and transit, while providing a super fast way to pack. All our bubble pouches are manufactured in the UK to the highest standards, and come with 30mm peel and seel strips, for easy sealing - simply pop your product inside the bag and seal it. Suitable for small electrical parts and components, jewellery, books, batteries etc.