EUC is a bra by ThirdLove. This is the 24/7 perfect coverage bra. 76% Nylon, 24% Spandex OUR 24/7 PERFECT COVERAGE BRA: Unmatched 24/7 fit & comfort with more coverage and support and no angry strap marks. The holy grail of everyday bras for fuller cups BRA BENEFITS: 1) Ultra thin memory foam cups that form to your specific shape 2) Pleated no slip straps that stay in place all day 3) Poke-free flexible underwire 4) Micro fiber strech material, smoothing sides & back Size 42E