Speedo Hyperboom Splice Muscleback 
Size: Check Size Chart in Photos. 
Speedo swimwear is sized to have a close athletic fit to help you have the best swim, though if you prefer a looser fit we recommend selecting a size up.
Black/Grey

Features:
  • Muscleback design - offers flexibility and freedom of movement, so you can swim in comfort
  • 100% chlorine resistance - for long lasting performance
  • Quick dry - dries faster after your swim workout
  • 50% recycled - one of the yarns is made from 100% post-consumer waste, such as recycled plastic bottles
  • ECO Endurance+ fabric