Customer Reviews Merrell Siren 4 Thermo Mid Zip Waterproof

Love the look, and comfort of these boots. Received the order really fast.

Looked for long time to find some good winter boots. Great for daily walks with dog. Solid boot with good grips on the bottom. About -30 they started not to feel warm when sitting still but as long as your moving with good smartwool socks you'll be fine. Wish you could slip on and off the boot without having to untied the laces.

These are nice warm boots. The zipper makes easy to get on & off. Was glad I got a half size larger. I wish they went up my leg a little more for deeper snow tho

So comfy. Very supportive perfect for chilly days.

I love how light these boots are. We just spent a week in the mountains and they kept my feet warm the entire time. Good grip on snow but I felt they didn't track as well on the more slippery spots. They are comfortable. The reason I only give them 4 stars is I wish the foot bed and arch support were better. My last set of Merrell boots that I bought 10 years ago had much better arch support and comfortable insole. Overall tough, I do really like them. Hope they last just as long as my last Merrell winter boots!

Very warm and comfortable, though I have only used down to 15 degrees so far. Easy to adjust laces to be tighter on the foot and loser in the ankle, which was important for me. Great traction in minimal snow/slush. I walk dogs for my job and these are great for easy on/off and walking in winter.

I ordered these in a size 8. It's as if no one took into account the insulation would take up interior volume. Can't wear winter socks with these boots. Athletic socks still result in a tight fit. Not enough tie length to adjust volume and still tie top portion of boots.

Very comfortable and warm, zipper on side is not staying up with any sort of activity though so long term I'm not sure how functional these will be.

These were very uncomfortable at first, but once I cut the insole a little and wore them for a while they are now very comfortable! They are not warm however if you like someplace with mild winters these would be ideal, but temperature below freezing really sink through these.

The shoelaces come undone unless you double knot, the zipper unzips and also gets caught when unzipping, and the shoe is wider than expected so it looks too big although length is good. Would not buy again. They are really warm though.

Although my feet are relatively flat, I don't usually have to order wide. These felt pretty narrow and maybe too arched for me, immediately uncomfortable. It's unfortunate because they're cute with the knit top and I like the height! Some glue was visible on the black fabric as well which didn't look great for the price.

The fit was just OK no support not comfortable

these were just to hard and stiff on my ankles and felt very uncomfortable when I tried them on...other wise I do love Merrill boots..I have an older pair that has just a pull on and has soft fake fur filling around the sides so very sorry that I had to return them

They are okay not exactly what i thought when looking at the picture online. My feet were warm.

These boots are incredibly narrow and stiff with no option to order a wide size. I ordered a size 10 but these feel more like an 8. Awful. I'm returning these.

I purchased these boots for winter walking, thinking they were solid, and had a good tread for walking on icy surfaces. They were awful. I nearly fell several times, and they weren't supportive. They also didn't keep snow from getting in around the top of the boot. I ended up just giving them away to someone who needed boots. A waste of money!

I wore these in -10 in an area with dry cold and we walked through snow. The snow came close to the top of the boot. My feet were freezing and they were wet inside all around my foot when I took them off. Such a disappointment, especially for the price.

Light weight & comfy. definitely the best waterproof I'veever had. If we ever have another 10" snow storm, I'll just put my cleats on them & easily hike uphill to go into town for necessities. Wish I had these years ago when I was in college in a VERY snowy part of upstate NY. LOVE rhem!!!