UPK-D1 PocketSai Trainer (Polymer Composite)

$24.95 $45.50

This UPK-D1 PocketSai was made in Polymer Composite at 100% scale and fully functional.  This material is impressively tough and rigid.

If you are curious how the PocketSai works or just want to get your hands on a low price version to try it out, THIS IS the ONE.

  • EDC Defensive Implement Trainer
  • The PocketSai is self-sheathing making them easy and safe to carry
  • Inspired by the traditional Okinawan Sai
  • Retractable Trainer Blade automatically Locks at either position (open/closed)

What’s Included

x1 PocketSai

Mono Colors for Polymer Composite :

  • Red Blade / Red Handle
  • Navy Blue Blade / Navy Blue Handle
  • Black Blade / Black Handle
  • Yellow Blade / Yellow Handle

Color Mix for Polymer Composite :

  • Red Blade / Black Handle
  • Navy Blue Blade / Black Handle
  • Black Blade / Red Handle
  • Black Blade / Yellow Handle
  • Black Blade / Blue Handle

Material Specifications:

  • Blade: Polymer Composite
    • 50% Glass Filled Nylon
  • Handle: Polymer Composite
    • 50% Glass Filled Nylon
  • Lock Release Button: Hardcoat Type III Anodized 7075-T6 Aluminum
  • Custom Screws: 450 Stainless steel
    • Heat Treated by Age Hardening to the H900 condition HRC 45
  • 301 Stainless Steel Springs


  • Extended length: 11.7 inches (297 mm)
  • Collapsed length: 7.3 inches (186 mm)

Important Read :

Designed from the ground up as an implementation of the Okinawan Sai, a defensive melee weapon that would be practical to carry and sheath itself.  The Handle slides to eclipse the blade's  edges and point, and makes an integrated sheath.  It's one-button locking mechanism is designed to engage in the open or closed position, and must me pressed to unlock it from either end.