CEP Men’s Dynamic + Outdoor Light Merino Mid-Cut Socks

Review by Arnie P

Men's Dynamic + Outdoor Light Merino Mid-Cut socks

Men’s Dynamic + Outdoor Light Merino Mid-Cut socks

CEP Men’s Dynamic + Outdoor Light Merino Mid-Cut Socks

CEP provided the Men’s Dynamic + Outdoor Light Merino Mid-Cut socks for review purposes.


A lightweight sock designed for a variety of climates to provide a thermal balance in warm and humid conditions.


A combination of Merino wool, silk, and high-tech functional fibers for durability

Perfect anatomical fit
Extra flat toe seam
Benefits of thermal balance provided by Merino wool and silk
Excellent heat and moisture control
Padded zones to relieve pressure where needed
Close-fitting to prevent blisters
Antibacterial to reduce odor


Polyamide: 75%
Merino wool: 15%
Elastane: 15%
Country of origin: Germany

Colors available

Lava Stone, Volcanic Dust, and Deep Magna


The website has a sizing chart. One starts by measuring the calf circumference at the narrowest point. Then referring to a chart to find size.

Calf measurements in inches

8.5 to 9 in for size 3
9.5 t0 10 in for size 4
10.5 to 11.5 in for size 5

The website does not mention shoe size but I made my request I mentioned my shoe size as 9 US and received a size M sock in color Lava Stone.


Sock size: M
Calf size: 3
Weight: 50 g/1.8 oz

Height of sock when wearing

about 10.5 in


The calf size mark is in Roman numerals, mine were III
R for right foot
L for left foot

Care and cleaning

Since I did not see anything on the website I would use cleaning methods for Merino wool and silk. I use Woolite or a mild soap in lukewarm water and hand wash. Recently I replaced my old washing machine and this one has a special delicate cycle which I am now using most of the time. The only exception being if I have only one item to wash.

First use

I slid the right sock on without looking and noticed it was not quite in place. A sign the sock was not touching all my toes in the same manner. I started the process over, this time watching my heel and guiding the sock for a good fit. When doing this the sock was almost always in the perfect position or only required a slight change at the toes. I learned a long time ago that having my socks as close to my skin is the way to achieve comfort.

My initial reaction is they are thin, comfortable and warm. On the negative side, I would feel any debris entering my shoe, resulting in my needing to remedy the condition immediately.

Test plan

I will be wearing these socks every day all day during the test except when they will be in the wash. These activities will include, weekly group hikes, walks in the neighborhood, Silver Lake, senior center, shopping, and walks to a coffee shop. A backpack is also possible. I will be going to seminars and anything else that comes along.

I wish to thank 4alloutdoors.org and CEP for the opportunity to test the Men’s Dynamic + Outdoor Light Merino Mid-Cut Socks. Please check back in about a month when I will have more to say.

Update 6-23-16

It has been a good month of testing the CEP Men’s Dynamic + Outdoor Light Merino Mid-Cut Socks. The temperature has been warm during the day and cooling down during the night. With day temperatures ranging from the 70’s to the low 90’s and the humidity very seldom high. I wore these socks every day all day except for wash days. I have been pleasantly surprised with the performance of these socks. This is because I did not like my first use of a thin tight fitting sock. My review will explain why my ideas have changed for the better.

Daily wearing

I had been wearing a low cut water shoe and tried these socks with these shoes. With the openness and looser fitting of the shoe, I was prone to getting some sand in my shoe. Within a few days, I received a pair of just above the ankle boots to test. This turned out to be a perfect match. The fit was perfect. I laced the boots and tied the knot securely. The comfort was excellent, even when the temperature was in the low 90’s.

The fit

This is my first time wearing right and left socks. It does mean checking for the label each time. The socks are thin socks with thicker areas where extra material is needed. I can see through the thin areas but not through the thicker areas. I will have more to say on how this works out in my final review.

Hiking in Harold Parker

I hiked with my hiking group 4 times for 2 plus hours each time. The temperature on these hikes was from the mid 80’s to the low 90’s. I did not get any debris in my boots, which is good since I did not have to stop to remedy the situation.

Harold Parker Hiking group

Harold Parker Hiking group

Harold Parker with CEP socks

Harold Parker with CEP socks


At the gym

My use of the treadmill is my most demanding use of these socks in the gym. I have been setting the speed at 4 mph and an elevation of 3 for 20 minutes. I have not had any problem in the gym with these socks. I will note that after taking a shower in the gym, putting on the socks after a shower is not as easy as it is in the morning when my feet are drier. I think it is because all my other socks are not as tight filling. I do see some signs of creases caused by the socks but they are minor and are gone when I wake in the morning.

Local walks and more

I do walk in my neighborhood on a daily basis for shopping, visiting coffee shops, and walking to our local beach on Silver Lake. I did get sand in my shoe a couple times walking on the beach. In some areas, the sand is soft and easier for it to find its way into my boot. This was a rare occasion. I have attended seminars and experienced a drastic drop in temperature. There was about a 30 degrees drop from my car to the seminar room. My upper body felt the difference but not my feet. My work projects during this period included laying 16 in by 16 in cement patio blocks and scraping and painting 2 sides of my house. I was putting in between 7-8 hours for 3 days scraping and painting my house. It was in the mid 80’s sunny, but I remained comfortable and happy it only took 3 days.

Washing and odor

My washing decision is based on odor and when I can do the wash. I found I did not want to go more than 5 days between washes. I was typically washing these socks between 3 to 5 days of wearing. I use the regular setting on normal on my washing machine and hang dry them outside most of the time. Once I hang dried them inside as it was too late in the day for outside drying.

I am very pleased and surprised with the results achieved in the first month of testing. I see no signs of wear or weakness. I wish to thank 4alloutdoors.org and CEP for the opportunity to test the Men’s Dynamic + Outdoor Light Merino Mid-Cut Socks. Please check back in about a month when I will have more to say in my last look.

A last look 7-22-2016

The weather during this period was hot and humid with negligible rain. The lawns appear lifeless and the few wild berries are small, lacking taste. Daylight temperatures hovered in the 80’s and 90’s with a few degrees lower at night. My activities during this period continued to be the same but at a slower pace. I continued to wear the same boots I used for most of the last report.

Outdoor use

I hiked another 4 times with my with my Wednesday hiking group on these 2-hour hikes. I have been sweating more. The trails are rough and despite the added moisture from sweating I did not experience and adverse effects of blisters or abrasion to my feet. I have walked to the senior center several times making a 3-4 mile round trip depending on the route and number of side excursions. I walked to Silver Lake a few times a week, sometimes seeking relief from the heat.


In the warmer weather, I sweat more and I noticed I was washing these socks more often. Since I hang dry my socks, there were a few times when the drying times were longer. On one of my washes, the socks had gathered lint which was visible after drying. Running this load in my dryer removed most of the debris. The small pieces of debris that get attached remain only for a short time.

The fit and comfort

The fit is still excellent after 2 months of use. I find I am not pulling up my socks as often. It is hard for me to break the habit of checking the condition of my socks. I was pulling the socks up before I realized that pulling them up was unnecessary. I detected a few pills on the bottom toe end of the right sock.

CEP Men's Dynamic + Outdoor Light Merino Mid-Cut Socks after 2 months use

CEP Men’s Dynamic + Outdoor Light Merino Mid-Cut Socks after 2 months use


I am pleased to report that these socks performed well after two months of use. I cannot see any signs of wear. My feet are drier during hot, humid weather with no adverse effects.

I wish to thank 4alloutdoors and CEP for the opportunity to test the

Men’s Dynamic + Outdoor Light Merino Mid-Cut socks.