If you need an upgrade from nylon or Kydex for your Brisa Necker 70 Neck Knife then this well made sheath is a great choice.

The Brisa Necker 70 Leather Sheath is designed to fit on your belt or around your neck with a lanyard. Made from thick, Spanish leather it's sure to last as long as your knife. 

The Necker 70 will fit very snuggly as will a knife of similar dimensions (65-70mm).