I hope this review helps .I have been wearing Condor Ball Caps for years , so I was pretty sure on what size to order .These are like Flex Fit style hats .No snap strap in the back as you can see in photos .* A Flex Fit hat is very similar to a fitted ball cap - with some flexibility.I thought I had a large head ( all my cowboy hats are size 7 1/4” - Fitted ).I remember a few years ago , I ordered a Condor flex fit hat size large / extra large .It was wayyyyy too big !!So I thought that size small medium would be too small .They aren’t !!Plus over time the hat could stretch a bit .My older Condor hats still fit great ( with a little — I mean Very Little — wiggle room .Listen :You can’t beat these prices !!If you are looking for a military type tactical ball cap , look no further !!!The hat comes with patches ( front and back ).I normally don’t wear the back “ Don’t Tread “ patch on the back .I’m really liking this mesh style .Like new and improved mesh ( not like the mesh of the 70’s and 80’s trucker style ).Just really cool and hard to describe.Again / I went with the Olive Drab and the Multi Cam .I like to wear military type clothing so these hats pretty much match everything I wear .I already have the black one .Looking for a Blue one now .( for some reason I don’t remember seeing Blue in drop down menu but I’ll double check again . No biggie ).Anyway / These hats are awesome!!Try and measure around your head and match it up with appropriate size . If you don’t have a measuring tape ( cloth ), just use a piece of string .Wrap string around your head , Mark it on the string , and then lay that string flat on a table and use a measuring device . ( you can google hat sizes using your measurements eg if your head is 22 1/4 “round , you would be in a size would be size 7 1/8” .Stay safe as always Everyone.