Tablet holder. Getac hand strap. I think it is type GMHSX2 but not sure.
Kluz 2-Pack Universal Tablet Hand Strap Compatible With Kindle and Kindle Paperwhite, PU Leather One-Hand Grip for 9-11 Inch Tablets & E-Readers, Adjustable Elastic Strap, Black & Matcha Green
Tablet Hand Strap Compatible with 6-7.5 Inch E-Readers & Tablets, Anti-Slip Anti-Drop Elastic Finger Holder with Snap-on Design, Ultra-Thin PU Grip,kindlee strap &kindle handstrap Reading Office Use
Tablet Hand Strap Holder Lightweight Handle Grip for Reader 4-8 inch Tablet H2
Ulefone Armor Pad 3 Pro Rugged Tablet Hand Strap with Kickstand, 2-in-1 Lightweight Finger Grip Holder, 360-Degree Screen Rotation
Universal iPad & Tablet Hand Strap Holder Stand 360 Rotating Grip Self Adhesive
Universal Tablet Hand Strap Holder – iPad 9.7/10.5” Leather Grip Security
