spokesperson the injury "looked like a bad sunburn". He was only allowed to participate in the match after being cleared by a ringside doctor and was given bottles of water throughout the match to douse himself with to alleviate the discomfort. Acknowledging the concern, WWE now had padded the steel floor of chamber. Match Rules The Elimination Chamber match is a variation of elimination-based matches which draws elements from steel cage and Hell in a Cell matches in that the wrestling ring is surrounded by a large steel-fenced cage supported by girders. Originally, its design was a circular-like chain-linked structure, but since 2017 it is now square and encloses the ring. Its floor is platformed over the ringside area around the ring which elevates and levels it with the ring mat. Within the Elimination Chamber, four enclosures, referred to as inner chambers or pods, are encased in plexiglass and face the outside of each ring post. The match is contested by six or seven participants: two or three starting in the ring, while the other four are held within each inner chamber. The Elimination Chamber in February 2018 featured a seven-man chamber match in which three participants began. At regular intervals, one of the four participants within an inner chamber enters the match. This continues until all four have been released. The entrance intervals are typically five minutes, though four and three minute gaps have also been used. The objective of the match is to eliminate each opponent from the match by scoring a pinfall or a submission. These can occur in the ring or on the chamber's elevated floor, but starting with the 2010 event all pinfalls and submissions must take place within the ring. Disqualifications and count-outs do not apply in the process of elimination. The winner of the match is the last remaining participant after all others have been eliminated (or after all members of the opposing tag team are eliminated in either the tag team matches or the twelve-on-twelve tornado tag team elimination matches). The same rules apply when the match involves six tag teams, where two teams start in the ring and a new team leaves the pod and enters the ring at regular intervals. Structure According to a WWE Magazine article in 2009 by WWE's production designer Jason Robinson, who co-designed the structure, several designs for the Elimination Chamber were considered. The structure was