Excellent choice — #5 of 31 Viscose ranks #5 of 31 fabrics for chafe resistance. It is one of the best fabrics for this. Ranked with a smooth-fibre bonus plus low weight and breathability. The top pick is Silk.
Viscose measures 70/100 for breathability, 13% moisture regain, 25/100 warmth, at 150 gsm. Chafe resistance rewards a smooth, light surface: Viscose has a smooth hand at 150 gsm.