# Stroller second seat age and weight limits What minimum age and maximum child weight apply to stroller second seats? BABY JOGGER City Select Second Seat Kit: The store lists the seat as suitable from newborn onward\. The second seat has a maximum child weight of 45 lb\. Bugaboo Kangaroo Sibling Seat: The store recommends it from 6 months, with a maximum child weight of 40 lb \(18 kg\); it is not for newborns\. Bugaboo Donkey 6 Sibling Seat: The store listing says the sibling seat is for children from 6 months up to 22 kg \(50 lbs\), while the Donkey 6 North American manual says the seat maximum is 23 kg \(50 lbs\); the sources disagree on the kilogram limit\. Cybex Gazelle S Second Seat: The maker states the age range is from birth to approximately 4 years\. The manual’s weight\-limit page shows max\. 35 lbs/15\.9 kg and max\. 50 lbs/22\.7 kg\. Cybex Gazelle S Seat Unit: The maker's UK page says from birth to approximately 4 years; the store says from 6 months, so the sources disagree on minimum age\. The US manual prints configuration limits of 35 lbs/15\.9 kg and 50 lbs/22\.7 kg; the global manual prints 15 kg and 22 kg, so the regional figures disagree\. ### 1. [BABY JOGGER City Select Second Seat Kit](/products/ucp/anbbaby-com/4005436489814) (sold by anbbaby\.com) The second seat has a maximum child weight of 45 lb\. - Minimum age: The store lists the seat as suitable from newborn onward\. (guide) - Maximum child weight: The second seat has a maximum child weight of 45 lb\. (guide) ### 2. [Bugaboo Kangaroo Sibling Seat](/products/ucp/anbbaby-com/9471020040478) (sold by anbbaby\.com) The store recommends it from 6 months, with a maximum child weight of 40 lb \(18 kg\); it is not for newborns\. - Minimum age: The store recommends it from 6 months, with a maximum child weight of 40 lb \(18 kg\); it is not for newborns\. (guide) - Maximum child weight: The store recommends it from 6 months, with a maximum child weight of 40 lb \(18 kg\); it is not for newborns\. (guide) ### 3. [Bugaboo Donkey 6 Sibling Seat](/products/ucp/albeebaby-com/9722090717415) (sold by albeebaby\.com) The store listing says the sibling seat is for children from 6 months up to 22 kg \(50 lbs\), while the Donkey 6 North American manual says the seat maximum is 23 kg \(50 lbs\); the sources disagree on the kilogram limit\. - Minimum age: The store listing says the sibling seat is for children from 6 months up to 22 kg \(50 lbs\), while the Donkey 6 North American manual says the seat maximum is 23 kg \(50 lbs\); the sources disagree on the kilogram limit\. (listing) - Maximum child weight: The store listing says the sibling seat is for children from 6 months up to 22 kg \(50 lbs\), while the Donkey 6 North American manual says the seat maximum is 23 kg \(50 lbs\); the sources disagree on the kilogram limit\. (listing) ### 4. [Cybex Gazelle S Second Seat](/products/ucp/albeebaby-com/9616946987239) (sold by albeebaby\.com) The manual’s weight\-limit page shows max\. 35 lbs/15\.9 kg and max\. 50 lbs/22\.7 kg\. - Minimum age: The maker states the age range is from birth to approximately 4 years\. (guide) - Maximum child weight: The manual’s weight\-limit page shows max\. 35 lbs/15\.9 kg and max\. 50 lbs/22\.7 kg\. (manual) ### 5. [Cybex Gazelle S Seat Unit](/products/ucp/albeebaby-com/9564471230695) (sold by albeebaby\.com) The US manual prints configuration limits of 35 lbs/15\.9 kg and 50 lbs/22\.7 kg; the global manual prints 15 kg and 22 kg, so the regional figures disagree\. - Minimum age: The maker's UK page says from birth to approximately 4 years; the store says from 6 months, so the sources disagree on minimum age\. (guide) - Maximum child weight: The US manual prints configuration limits of 35 lbs/15\.9 kg and 50 lbs/22\.7 kg; the global manual prints 15 kg and 22 kg, so the regional figures disagree\. (manual) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-29T20:00:36.969Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. 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