Designed for today's athlete, the TYR Girls' Cascading TYR Diamondfit Swimsuit  boasts a 100% polyester construction, making it nearly 20 times stronger than traditional swimwear. So, whether your training takes you to the pool or the beach, you can be sure TYR's Durafast One® fabrication will provide both a secure fit and fade-free color. Featuring a medium neckline, sleek/flexible straps, keyhole back and moderate cut leg, the Diamondfit is ideal for athletes who want reliable coverage during every swim. TYR Training swimsuits are fully lined, ensure 4-way stretch technology and provide UPF 50+ sun protection. All Durafast One® suits are chlorine proof and sustain an impressive 300+ hours of performance. Fully lined Medium neckline Moderate cut leg Sleek/flexible straps Keyhole back Reliable coverage 4-way stretch UPF 50+ Chlorine-proof 300+ hours of performance TYR Fabrication: 100% Polyester