# Stroller sibling seat weight limits compared How much weight can a stroller sibling seat hold for the child riding in it? Cybex Gazelle S 2nd Seat Unit: The seat\-unit manual gives a maximum occupant weight of 22\.7 kg \(50 lb\)\. Cybex Gazelle S Seat Unit: 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\. 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 manual’s weight\-limit page shows max\. 35 lbs/15\.9 kg and max\. 50 lbs/22\.7 kg\. BABY JOGGER City Select Second Seat Kit: 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\. ### 1. [Cybex Gazelle S 2nd Seat Unit](/products/ucp/anbbaby-com/8152020975902) (sold by anbbaby\.com) The seat\-unit manual gives a maximum occupant weight of 22\.7 kg \(50 lb\)\. - Maximum child weight: The seat\-unit manual gives a maximum occupant weight of 22\.7 kg \(50 lb\)\. (manual) - Minimum age: CYBEX says the seat unit is suitable from 3 months up to 50 lb, while the store says from 6 months, so the sources disagree; newborn use requires a separately sold cot or infant car seat\. (guide) - Conversion: The store says the seat can occupy either the upper or lower position on the stroller\. (listing) ### 2. [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\. - 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) - 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) - Conversion: The second seat converts the Gazelle S from a single to a double stroller so two children can ride at once\. (listing) ### 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\. - 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) - 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) - Conversion: The sibling seat turns a Bugaboo Donkey 6 into a side\-by\-side double stroller for a second child\. (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\. - Maximum child weight: The manual’s weight\-limit page shows max\. 35 lbs/15\.9 kg and max\. 50 lbs/22\.7 kg\. (manual) - Minimum age: The maker states the age range is from birth to approximately 4 years\. (guide) - Conversion: The second seat converts the Gazelle S from a single to a double stroller without additional adapters\. (listing) ### 5. [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\. - Maximum child weight: The second seat has a maximum child weight of 45 lb\. (guide) - Minimum age: The store lists the seat as suitable from newborn onward\. (guide) - Conversion: The kit converts a City Select single stroller into a double stroller\. (guide) ### 6. [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\. - 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) - 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) - Conversion: It is made for the Bugaboo Kangaroo stroller and adds a second seat for tandem use\. (guide) 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 2026-10-17T04:15:32.653Z. This page is published by RoboTrunk, a store built for shopping agents. 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