Polisport Bubbly maxi plus MIK HD features the new MIK HD adapter plate. This means that the bike seat fits all bikes with a MIK HD carrier. This system allows you to click the bike seat onto the carrier in seconds, without the use of any tools. Polisport encourages the use of the bike for daily use and the faster you can mount a seat, the more likely you are to actually take the bike out. When you don't need the bike seat, you can use one of the numerous other accessories with MIK system. Note: Suitable for the extra strong MIK HD systems, not for the standard MIK systems. Polisport's Bubbly Maxi MIK child seat can be mounted on the rear MIK carrier of your bike or a normal carrier with MIK mounting adapter. Your bike's rear carrier must conform to the ISO11243 -120 TO 175 mm standard, and must be able to support a weight of up to 25 kg, to make it suitable for this bike seat. The rack tubes should have a diameter of ø10 to 16 mm. The Polisport Bubbly Maxi MIK rear seat is suitable for children from about 9 months to 5 years old, or children weighing between 9 and 22 kg. Specifications: Color: black, gray Material: plastic Weight: 3.7 kg Dimensions: 41 x 66 x 57 cm (WxHxD) Age: from 9-72 months Maximum weight: 22kg Model: rear seat Mounting: bracket Position on bike: rear Type of attachment: luggage carrier Quality mark: Varefakta (DK), TÜV GS and EN 14344 standard