TRADE-UP TO MIPS AND SAVE
MIPS-equipped helmets may provide an additional measure of protection in certain impacts. Beginning August 5 and continuing through October 31, bring in your current helmet to River City Bicycles for inspection and/or trade-in and get 25% off on select new MIPS-equipped helmets from Giro and Bell.
MIPS stands for Multi-directional Impact Protection System, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts.
MIPS explained from Bell
And from Giro