waterproof socks water stop seal belt
waterproof socks water stop seal belt
river crossing waterproof socks
size chart water stop seal belt
water crossing waterproof socks
waterproof socks water stop seal belt
waterproof socks water stop seal belt
river crossing waterproof socks
size chart water stop seal belt
water crossing waterproof socks

RANDY SUN Merino Wool Knee High Waterproof Socks With Cuff Water Seal

Regular price $42.00

Only 3 items in stock!


Merino wool padded thermal knee high waterproof socks! Premium Merino wool cushioned terry loop at the soles of the socks keep your feet dry and super warm in cold weather. What is Merino wool really good at? It helps keep your body at a stable temperature. When it’s cold outside, the natural crimps and bends in its fibers trap air, insulating your feet. When it’s warm outside, it transports sweat away from the skin, helping to keep you cool and dry. These knee high waterproof socks are ideal for water crossing activities and sports.

Reusable, Removable, Adjustable Water Stop Seal Belt

As the name suggests, a water stop seal belt acts to stop water from going into your waterproof socks from the top. These light weight & easy to carry water stop seal belts are totally game changer. They provide extra water protection for sock cuffs of waterproof socks. 

Your must-have for cycling, MTB and running on heavy rainy days, or waterfall hikes and stream/river crossing! Absolutely a comfortable and flexible solution for all of your leaky waders and shoes!


  • Please don’t use these removable seal belts on other waterproof socks.
  • In order to ensure the sealing effect, we used a very strong hook and loop. Please DO NOT touch the hook side to the socks to avoid fuzzing.
  • The hook and loop part will become a little fuzzy after use, it does not affect the adhesion, these belts are reusable.
  • When you continue to use the water stop seal belt for a long time, or you feel that the water stop seal belt is too tight, please loosen the belt.

RS-Tech, Three-Layer Construction

We choose Eco-friendly materials to reduce pollution to the environment.

  • Outer Layer: 61% Nylon, 32% Polyester, 7% Elastane. Durable, Flexible.
  • Middle Layer: 100% Waterproof And Breathable Membrane.
  • Inner Layer: 42% Merino Wool, 42% Acrylic, 12% Polyester,4% Elastane

thermal waterproof socks

Breathable & Windproof & Waterproof Socks

Merino wool inner lining also helps keep you feet sweat-free and dry. Merino wool transports sweat and moisture away from skin as a vapor. Merino fibers are inherently porous. They’re composed of little plates that moisture vapor can get in between, meaning you're not left feeling wet, cold and clammy after a workout. Merino wool helps you stay warm and dry when you’re moving outdoors.

waterproof breathable socks
Anti-Dirt & Cushion Effect

Waterproof membrane prevents rain, snow, mud, sand, dirt and germs from getting inside your socks. It also offers protection against mosquito bites and much more.

Terry-loop thermal waterproof socks are cushioned to absorb shock and provide long-lasting comfort, providing shock absorbing comfort and ankle impact protection. It helps eliminate foot, leg, and back pain caused by standing or walking for long periods of time.

sandproof waterproof socks

Why You Should Have Water Stop Seal Belt?

  • High Elastic. It stretches easy to accommodates most size legs safely and tightly.
  • Adjustable, soft and comfortable.
  • Removable. You can carry them in your backpack or even your pocket!
  • Reusable.

Recommended For

These thermal outdoor socks prevent from cold and numb feet, blisters, frostbite and trench foot. They are ideal for outdoor activities such as water activities and sports, water ski, hiking, fishing, cycling, MTB, running, camping, hunting, golf, kayaking, skiing, skating, mountaineering, stream crossings, bushcraft, triathlon, extreme races, dog walking, commuting, etc.

Great gifts for outdoor workers, trainers, runners, hikers, backpackers, policemen, military personnel, guides, postmen, woodmen, oil workers and drillers.

where do you use waterproof socks
How to use Removable Elastic water stop seal belt?
1. Hold both ends of the water stop seal belt and stretch each end completely.
2. Place the seal belt under the cuff of the sock.
3. Adjust the tightness of the water stop seal belt.
4. Make sure the water stop seal belt is comfortable and tight around the leg.

river crossing waterproof socks
Height: Knee High

middle calf waterproof socks
Get some pairs for your family and friends as a gift that is functional and beneficial to their foot health.

Size Chart



USA Women



Foot Length (CM)



























How to Wash Waterproof Socks?

  • Hand wash or machine wash below 40℃.
  • Drip dry.
  • Do not bleach, iron or dry clean.

When You Use The Socks:

  1. Waterproof socks are waterproof from the toe to just below the cuff of the sock. Sock cuffs are not waterproof. But you can choose cuff seal belts here for extra protection.
  2. Always wear waterproof socks inside your footwear.
  3. Don't leave them in the sun for several weeks. One or two days is enough.

waterproof socks care

The lack of international movement has caused problems for most logistics service partners. Therefore, we are unable to offer free shipping outside of the United States. However, to minimize the impact we will share the shipping costs with our customers. Thanks for your support.

What’s your shipping method and what is the cost?

Express shipping is available. Please refer to the chart below for more details.

How long can I expect to receive my order?


Shipping Method



USA (no custom duty)

USPS (from USA warehouse)


3-8 Working Days




Within One Week

Russia AliExpress Standard Shipping Free 12-30 Working Days
Other Countries FedEx/UPS/TNT/DHL $26 Within One Week


*Dear customers, orders outside the United States may be shipped from our Chinese warehouse or our US warehouse. When your package arrives in your country and goes through the customs clearance process, duties may be incurred.

Please contact service@randysun.com if you have any question.



If you are unsatisfied for any reason, you may return your package within 30 days. To be eligible for a return, your item must be unused and in their original packaging.

  1. Please take a photo of the socks and its original packing bag, send them to service@randysun.com. We will get back to you within 24 hours. 
  2. When you receive the return address and send it back, please inform us the TRACKING NUMBER. Please note that you will be responsible for paying for the return postage except for quality problems.
  3. Refund will be processed within 2 business days after we receive your package. We’ll issue the refund to your original method of payment. Usually you will receive it within 24 hours. 

Once your refund has been issued, we will send you an email to notify you. Your patience will be highly appreciated.

Exchanges (if applicable) 

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at service@randysun.com.

Late or missing refunds

If you haven’t received a refund yet, please contact your credit card company, it may take some time before your refund is officially posted. 

If you’ve done this and you still have not received your refund yet, please contact us at service@randysun.com

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