This duranble " Return to Sender, Undeliverable as Addressed" stamp boasts thousands of impressions without re-inking! Pre-inked custom stamps are ideal for addresses, instructions, directions, and more. Stamps are guaranteed for life! Please allow 3 weeks for delivery. Signature Stamps are also available, just mail 3 Signatures in Black ink on unlined paper as close to the size desired as possible. Each window desktop stamp features a sturdy, retractable frame to prevent smudging, a removable dust cover and red, blue, black, green or purple ink options. Ship USPS.