Sizing

Athlete performing a tennis forehand with a glowing yellow Prostrap swing trainer, dynamic action pose against a dark background.
SMALL

SMALL (Compact Frame)

  • Height: 5'0" (1.5m) and under.
  • Profile: Ideal for junior players and athletes with shorter wingspans.
  • Cord Matrix: 8", 9", 10", 11" (20cm - 28cm).
MEDIUM

MEDIUM (Standard Frame)

  • Height: 5'0" – 6'0" (1.5m - 1.8m).
  • Profile: The universal standard. Engineered to fit the biomechanics of 80% of adult players.
  • Cord Matrix: 12", 13", 14", 15" (30cm - 38cm).
LARGE

LARGE (Extended Frame)

  • Height: Above 6'0" (1.8m).
  • Profile: Built for tall athletes requiring extended reach and maximum wingspan clearance.
  • Cord Matrix: 16", 17", 18", 19" (41cm - 48cm).

The VariableTension Matrix

Included in every Prostrap system.

Every size tier includes a suite of four color-coded cords, allowing you to micro-calibrate your mechanical restriction. Progress through the colors as your muscle memory locks in.

  • YELLOW: Maximum Restriction (Shortest)
  • RED: High Tension
  • BLUE: Standard Tension
  • GREEN: Extended Range (Longest)
SHOP