ONE SIZE: 6M-4T- used and in excellent condition - there is a video on 7amEnfant and bambibaby.com that shows how it converts- shipping included in price The sleek and contemporary Blanket 212 evolution® keeps little ones toasty from head to toe on mountain hikes, chilly city streets, and everywhere in between. The smart design allows you to size it up or down using zippered length and width extensions so it can actually grow with your child from 6 months to 4 years old! Other notable features include simple hook and loop attachments that fit any stroller, plus a removable anti-slip back panel that eliminates extra fabric between baby's back and the harness for car seat use. This both helps the harness stay put and gives you easy access to it anytime you need i DETAILS Expands in length with its 2 length extensions and in width with its 2 position center zippers Removable back panel eliminates material between baby’s back and the car seat, allowing access to the 5-point harness Anti-slip back panel keeps footmuff in place on the stroller Universally adapts to all strollers and car seats with hook and loop attachments Large front pocket Water repellent outer shell, ultra-soft premium insulation, and anti-pilling micro-fleece, plush or cloud lining Temperature Rating: -4°F/-20°C Machine washable Measurements: 6-9M with no extension L:38" W:17" 9-18M with one extension L:43" W:17" 18M-4T with both extensions L:48" W:17"