Pink bicycle seat and helmet for 18-inch dolls (and other toys, too!) Easily attaches to most bicycles (bike requires crossbar mounting plate on rear fork) Seat: 12" (L) x 6.5" (W) x 7" (H) / Helmet: 4.5" (L) x 4" (W) x 3" (H) Requires installation, instructions provided, tools not included Suggested for ages 3+ (small parts) Compatible with most 18-inch dolls (including American Girl and Journey Girl) Dolls sold separately