Helle Mandra Les Stroud Design 2.7" Compact Survival Knife Curly Helle Mandra Les Stroud Small Bushcraft Knife Review Helle Mandra Helle Mndra (Blade 620) Helle Mandra Les Stroud Small Bushcraft Knife Review. The Helle Mandra is designed by Les Stroud (the Survivorman) and Anders Haglund of the Helle company. The final development was done during the filming of a Survivorman episode in the Carpathian Mountains. The super compact knife has a short, wide blade with a good degree of belly for skinning type chores. The blade is made of triple laminated stainless for maximum edge retention and toughness. The handle features true full tang construction and a lanyard hole. The leather sheath secures the knife with a snap strap. It would be unnoticeable on the belt, and is well suited for neck carry. Item Details: Triple Laminated Helle Stainless Steel Blade Blade Length: 2. 7" Blade Width: 1. 2" Handle Length: 3. 25" Weight In Sheath: 3. 5 oz.