Sizes vary by bead type. For example, fuse (melty) beads are about 5.07 × 4.77 mm, while pony/barrel-style beads commonly appear in the mid-single-digit-millimeter range (examples include 8.5 × 6 mm and some 9 mm options). Exact dimensions depend on the bead style and manufacturer.
Most craft bead kits are made from standard plastic. Some listings specifically note items made from 100% post-consumer recycled plastic, so recycled plastic is also available in some sets.
Many craft bead sets list suggested ages of 6 years and up. Some small-piece packs list higher recommended ages (examples include suggestions like 16 years and up). Always check the product label for the specific age recommendation.
Place fuse beads on a compatible pegboard to create your design, cover with ironing (or parchment) paper, then fuse the beads by applying a household iron according to the kit or manufacturer instructions. Many fuse-bead sizes are made to fit standard pegboards; some kits include or sell compatible pegboards and ironing paper separately.
Packaging varies by kit. Larger fuse-bead kits often sort colors into reusable bottles and include a carrying case, while refill or bulk bags commonly use resealable bags to keep beads organized between sessions.