Friendship Belt T-Shirt. Designed by Quiet Storm Custom Wraps- a Tuscarora owned company, this unique, lightweight and breathable sports shirt features a take on figures holding hands. In this design the figures (based off of the Treaty of Canandaigua wampum belt) are also holding lacrosse sticks. The background design is wampum beads. On the sleeve is the seal of the Seneca Nation of Indians. This T-Shirt with the official seal of the Seneca Nation of Indians is an exclusive product sold by the Seneca-Iroquois National Museum.