The R350s model folder boasts a large and small blade (3" and 2 3/8") and is a little thicker and heavier (75g) than the original slimline R360S single blade (65g)

An optional hand-stitched leather sheath (no.1595) is available with a 10% discount when purchased alongside any smaller folding knife. Like all of our sheaths, it is of exceptional quality, handmade from 6-8 oz steerhide, oil-tanned and polished and with a button-down design. 

(See it here: http://www.colonialknives.co.uk/knife_shop/prod_4927297-No1595-Small-Overlap-Sheath.html )