From Thule, this infant sling features: Only use this product with children who cannot sit unaided between the ages 1 - 10 months old, who weigh less than 22lb/10kg, and who are shorter than 29 in/75cm Using secure hooks, the infant sling is quickly and safely installed or removed in seconds The infant sling is padded for your baby's lateral support and maximum stability Only use the infant sling for strolling Adjustable shoulder harness for a custom fit to your baby Compatible with all Thule Chariot bike trailers Machine washable at 30 degrees Shell composition: 100% PET Padding composition: 80% PU, 20% PP Product weight: 1.35 lbs Imported.