The Oxford Little Explorer Cross Bar Child Seat. Ergonomic padded seat. Independently tested. Simple to install. Oxford Little Explorer Cross Bar Child Seat Features Conforms to full CE standards for road cycling Top tube fixing. Foot pegs and straps for extra security. Fits most bikes with a cross bar Ergonomic padded seat. Independently tested. Simple to install 50mm maximum tube width. Suitable for ages 3 to 6 years. 22kg weight limit Suitable for steel and alloy frames. Not for carbon fibre frames