Somewhat smaller than your "shoe" size... I'm a 9.5 Mens shoe but these size 10's fit perfect.  Not as wide of a toe box as some other Saucony's I've owned for road running but a bit wider than the Peregrine 8's (which I returned).  I used this shoe for a 13.5 mile Spartan Beast run (Vernon NJ) with zero break-in and it performed awesome, no blisters.  This sneaker has great traction in mud / slippery rock and going up and down slopes.  The tread pattern works awesome, like knobby dirt bike tires for your feet.  Mud doesn't stick in them (self cleaning) and the tread bottoms are angled 2 ways (for going up hill with fore-foot and down-hill on heel).  Good cushioning.  Great stability for a shoe with so much padding.  I like a shoe with a minimal or zero drop but I also like cushioning and with only 4 mm this sneaker works very well.