Hi Nicole, Thank you for your enquiry. Yes, the Britax B-Safe Capsule is compatable with this stroller. To attach this capsule to the stroller you will need to use the Strider Click ‘n’ Go Recievers, which can be purchased separately online. If you follow the link: https://www.babyonthemove.co.nz/on-the-move-/single-buggy/single_buggy_accessories/Strider-Click–Go-Receiver this will take you to this product. For further information on this or any of our other products available, if you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder. Here you can find contact details for your nearest Baby On The Move Store where one of our team experts will be happy to assist you in your product search and help answer any further questions you may have. We hope this has helped with your query.