Maybe the most comfortable shoe I've ever worn period.
I got a pair of FJ Hyperflex BOA for Father's Day. Wore them for the first time yesterday. It felt like wearing slippers.
There are 3 main complaints about these shoes if you read online reviews:
#1: Sizes run large. I don't see that really. I usually wear a 10-1/2 or 11, and I fit these in an 11. The length is perfect. Over the past few years I've also found a wide shoe is more comfortable for me than the standard 'medium' width. I think a lot of that is age (I'm 55+). These fit pretty well in an 11 Wide which seems completely normal for me.
I do recommend you try them on in a store prior to making an online purchase, just to be sure. More on size in a minute.
#2: Where the cloth 'collar' and the pull loop on the back are sewn together it creates a hard spot on the inside back that can rub and/or blister your heel. I can see how this could happen if you're wearing low/no-show socks. I usually use ankle socks and had no rubbing or discomfort of any kind. I think having the correct size .... not too big .... so your heel isn't sliding up and down as you walk could be important as well.
#3: That there is not enough side-to-side support for the heel. This I have to 100% agree with. It's most prevalent walking on hills or uneven ground. It would be nice if future designs allowed the BOA cord to snug up the heel/ankle as well. This had no effect on golfing ... I didn't notice any sliding or torsion issues while swinging the golf club.
However, this is the other area where I getting think proper sizing is important. Try and find a size that is snug in the back of the foot (heel/ankle). I could maybe have gone with an 11M or 10-1/2W. I'm going to try using some slightly thicker socks next time.
The best things about these shoes is the overall comfort and the BOA system. I've always shied away from the BOA system as I thought it was kind of gimmicky. Gimmick or not, it's 10x easier than dealing with laces. Seriously. I'm sold.
As far as comfort, I have a lot of heel pain (plantar fasciitis, or similar). It's mostly fine while walking and when the muscles are warm, but later, or the next morning, it's pretty killer. With these shoes the amount of discomfort was definitely minimized. Much .... MUCH .... less than the shoes I normally wear (FJ Golf Sneaker). That alone is worth all the other issues as far as I'm concerned.
They are also very light weight. That can also make a difference on the effect of post-round wear and tear.
I normally wear what most would consider 'comfortable' shoes .... Ecco Helsinki slip-ons for work casual, Merrell Moab 2 for work work. These FJ Hyperflex are super comfortable to wear, even compared to those.
The Hyperflex come in both BOA and laced versions and have a 2-year waterproof warranty. The BOA system is guaranteed for the life of the shoe.
I would 100% buy again.