The Uline 5x10 #00 Lot of 250 Pieces Bubble Mailers Padded Envelopes are high quality shipping materials made in the USA. Featuring the trusted brand Uline, these envelopes are perfect for protecting and shipping small to medium-sized items. The bubble padding provides extra cushioning to ensure your packages arrive safely. Made in the United States, these envelopes offer reliable performance and durability for all your shipping needs.