From birth, because the standard stroller seat is labeled 6 months to 4 years and Thule says from-birth use is with the Thule bassinet or an infant car seat adapter sold separately; the compatible Thule Newborn Nest is also suitable from birth. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/59/96/1475996.pdf))
For a newborn, use one of Thule’s newborn solutions instead of relying on the standard 6 m+ seat: install the Thule bassinet, use a compatible infant car seat with the correct Urban Glide 3 single adapter, or use the compatible Thule Newborn Nest in the seat. ([thule.com](https://www.thule.com/en-us/strollers/jogging-strollers/thule-urban-glide-3-_-10101711))
When the child can sit up unaided, roll over, begins to push up on hands and knees, reaches 9 kg / 20 lb, or is more than 6 months old. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/15/02/1621502.pdf?rev=1.2))
Remove the bassinet from use at that point. The official stroller manual labels the standard stroller seat for ages 6 months to 4 years, so do not treat the bassinet stop-use trigger as permission to use the standard seat before 6 months. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/15/02/1621502.pdf?rev=1.2))
When the child can sit up unaided, or by 6 months old. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/40/03/1004003.pdf?rev=1.4))
Discontinue the Thule Newborn Nest at that point. The official sources reviewed do not provide a separate earlier removal timing for the included soft head rest pillow by itself. ([thule.com](https://www.thule.com/en-us/strollers/strollers-accessories/thule-newborn-nest-_-11200314))
When the child using the adapter reaches 9 kg / 19.8 lb child weight. ([thule.com](https://www.thule.com/en-us/strollers/strollers-accessories/thule-urban-glide-3-car-seat-adapter-single-maxi-cosi-_-20110761))
Remove the Urban Glide 3 single car seat adapter from use for that child once the 9 kg child-weight approval is reached, whether you are using the Maxi-Cosi-version adapter or the universal/Chicco-version adapter. ([thule.com](https://www.thule.com/en-us/strollers/strollers-accessories/thule-urban-glide-3-car-seat-adapter-single-maxi-cosi-_-20110761))
At 6 months old, which is the minimum age shown for Thule Urban Glide 3 seat use. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/59/96/1475996.pdf))
Begin using the standard stroller seat from 6 months onward. Thule’s official sources reviewed do not publish named recline positions or leg-rest stages by age, so use the adjustable recline and adjustable leg rest as available without a published age-stage schedule. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/59/96/1475996.pdf))
Whichever comes first: child reaches 4 years old, 22 kg / 49 lb, or 111 cm / 44 in. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/59/96/1475996.pdf))
Stop using the Thule Urban Glide 3 seat when any one of those seat limits is reached. ([thule.com](https://www.thule.com/-/s/approved/std.lang.all/59/96/1475996.pdf))