Sport buggy recommended minimum age 6 months pushchair weight 12 kg frame material aluminium carrycot pushchair seat backrest 4 positions brakes onetouch brake canopy xl canopy extendible viewing window removable harness system 5 point safety harness padded seat belt slider adjustable handlebar height 99 x 108 5 cm series joie trax folding mechanism one hand fold self standing special features removable drinks holder removable cushion number of whe