Poorly placed seams can irritate the nipples. Cups should be seamless or at least have covered seams. Hardware like hooks or fasteners must be covered with fabric and should be cushioned for maximum protection. Bra straps are a terrible nuisance when they slip. Choose wide, nonstretch straps for best results.
Some sports bras offer a two-hook back for an adjustable fit.
Many sports bras are shaped like halter tops. Be certain the armholes allow ample room for the unrestricted arm movements necessary during exercise and for freedom from chafing. For Men Only Although legend has it that athletes in ancient times competed nude, today's exercisers opt for the comfort and security of supportive clothing. At one time, coverage of the groin was the exclusive province of the jockstrap, or athletic supporter. It still has a role in sports underwear, but more comfortable alternatives are coming to the fore.