These are Tila bead bracelets, which are made using flat, square, two-hole Japanese seed beads manufactured by Miyuki. Key Features Flat Profile: The beads lay completely flat against the skin for a smooth, tile-like texture. Two-Hole Design: Every bead features parallel double holes, requiring two strands of elastic or thread to assemble. Stackable Style: They are typically worn in sets (stacks) featuring complementary geometric or striped patterns