The present invention relates to a car seat. The car seat is a bucket seat having a bottom support section for supporting the bottom of a user, a back support section for supporting the back of the user, a shoulder support section for supporting the shoulders of the user, a head support section for supporting the head of the user, and a left flank support section and a right flank support section for protecting the left and right flank of the user. A substantial part of the bucket seat is constructed from aluminium sheet. The car seat further includes at least one composite reinforcement member which extends along a part of the bucket seat and is mounted to the bucket seat. The at least one composite reinforcement member is manufactured from a composite material. The present invention further relates to a method for manufacturing the car seat.