The Panache Sports bra has an underwire which is encased in a silicone gel. The underwired cup is designed with shape and support in mind whilst the silicone gel is protecting your skin from any possible rubbing. The sports bra has a seamfree inner cup & it also features a racer back clip which increases the already excellent firm support. This sports bra gives incredible firmness for whichever level of activity you're undertaking keeping your bust firmly in place!