On Women Performance Tank - Zaffre / NavyUltralight, quick drying, breathable. When the competition (and temperature) is hot, thats when this running tank comes into its own. Comfort is 173 cm 5'8" and is wearing a size S Close. True to size. Materials Front: 90% Recycled Polyester, 10% Elastane Back: 80% Recycled Polyester, 20% Elastane Key features Super lightweight High performance fabric quick drying and breathable Reflective elements On DryTec technology to stay dry and fresh Smooth