These are handmade at the time of order and are made using high-quality stretchy cord and beads. However, they are delicate, and I recommend you do not wear while sleeping, swimming, bathing, or working out. Always roll your bracelets on and off to avoid breaking or overstretching. Bracelets are double knotted and glued shut. Seed bead bracelets are made using a bead spinner and multicolored bracelets will vary. No two the same! One size fits most makes for easy gift giving. Standard bracelet size is 7 inches. If you need a custom size, please message me. Please measure your wrist before ordering. I am happy to do any size you need. If ordering for a child, the recommended bracelet size is 5 inches, but again, please measure before ordering to ensure correct fit. I recommend adult supervision if a child is wearing these, as they do contain small pieces. All jewelry comes in a pink holographic bag inside of a pink bubble mailer. (See photos in listing). If you have any questions at all, please message me.