Babystyle Oyster Zero Gravity Stroller Buggy Moon. With the new easy gravity fold which freestands by itself, the new Oyster Zero Gravity is a perfect from baby to toddler stroller. A lightweight stroller, with a super spacious and comfortable fully reclining seat, the Oyster Gravity Zero is a versatile from birth travel system or a perfect second stroller, suitable for children up to 22kg. It features a new hub design and city grey chassis, new central brake pedal, a large canopy ventilation window and of course the new gravity fold. The Oyster Zero Gravity also features a 5-point padded safety harness and XL extendable hood (UPF 50+). Made with love by.