Karrimor SF Predator TECMAC 50 PLCE Backpack Review July 3, 2018October 26, 2018 - Corsairier Palm back system ? Concealable waist belt ? Quick release belt buckle ? S-shaped shoulder harness ? Sternum strap Introducing the Karrimor SF Predator TECMAC 50 PLCE Backpack from Karrimor SF.