Gently used. This infant snug insert was made by Uppababy, but it fit perfectly with my Britax double stroller. It kept my newborns head in place while going on walks. I never had to worry about him hurting his neck while napping, highly recommend. Designed with infants in mind, the Infant SnugSeat provides extra comfort and stability for your baby’s neck and back when strolling. FROM BIRTH SOLUTION: Use in stroller toddler seat or in RumbleSeat accessory in the most reclined position. Provides comfort through softly cradling child by supporting their neck & back, while the head support and wedge insert offer extra stability. COMFORT AND STABILITY: Designed with infants in mind, the Infant SnugSeat provides extra comfort and stability for your baby’s neck and back when strolling. BREATHABLE MATERIAL: Soft and breathable material keeps baby cool and comfortable during strolls. CONVERTS TO LINER: Transitions to a comfort liner when head support and wedge insert are removed for extended usage beyond the infant stage. COMPATIBILITY: UPPAbaby Vista (models 2015-2019), Vista V2, Cruz (models 2015-2019), and Cruz V2 strollers. Also compatible with RumbleSeat V2 and V2+ accessories when the canopy is in the most upright position.