... ,ABS Alu.& Oval tube:20*30 mm (1.2mm thickness) baby stroller1. Spacious frame, width of backrest: 390mm2. 3 position removable ... with 4 position adjustment, safer and more comfortable for your baby.4. with strap backside, easier for carry out5. with wheel ... with suspesion to avoid vibration, brake system on back wheel baby stroller