R409       *BUMPERS shouldn’t move. BUMPERS must not be articulated, relative to the ROBOT PERIMETER.

R404       *BUMPERS must be soft. Hard parts of BUMPERS must not extend more than 1 ¼ in. (~31 mm) from the ROBOT PERIMETER. Only padding (per R402-A), cover (per R402-C, including any coatings or markings), and soft fasteners used to secure padding or cover are permitted beyond this limit. Padding must extend at least 2 in. (~51 mm) beyond any hard parts of the BUMPER.

R408       *Weight limit with BUMPERS. The total weight of the ROBOT (as described in R103) with BUMPERS must not exceed 135 lbs. (~61 kg)

R401       *BUMPERS all around. ROBOTS are required to use BUMPERS to protect the entire ROBOT PERIMETER. Gaps of less than 1 ¼ in. (~31 mm) between adjacent segments are permitted as long as all corners are filled per R406.