The Yepp Mini is suitable for carrying children up to a maximum weight of 15 kg/ 33 pounds including child, pack and contents. The Yepp Mini can be attached to a 1,5 inch exposed quill-type steel stem (a threadless adapter will also be available). * Dutch Design meets Safety: Meets stringent European safety requirements and ASTM standards. 5-point safety harness with user-friendly buckle and easily adjustable footrests with straps provide optimal protection. * All Yepp child bicycle seats are made of flexible rubber foam which is very comfortable and shock absorbing. It has a high insulation factor (summer and winter) and no watter penetration thanks to closed cell-structure. * Safe - Easy to Use - Comfort - Award Winning Design! Quick and simple to snap into place and detach, lightweight, anti-bactirial and easy to clean. Easily secured with anti-theft lock. * Use the Yepp products only on a bicycle that is in good working order and of the type suitable for carrying the additional load. Contact the bicycle manufacturer to obtain this information.