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HydroSox Waterproof Socks

Waterproof socks for hiking, work, cycling, running and wudu. Four colours, four sizes, from £20 a pair.

Colour
Size
Quantity

Two is the most common order. A pair needs a day to air dry, so a second one means there is always a dry pair ready.

Delivery
Free on two pairs or more
Sent from
Our UK warehouse
Returns
14 days, no reason needed
Pay with
Visa · Mastercard · Amex · Apple Pay · Google Pay · Shop Pay

Size guide

Measure the foot rather than relying on shoe size — sizing is not consistent across brands, and the foot length is what actually has to fit.

Size Foot length UK shoe
S 22.0 - 24.0 cm UK 3-5
M 24.5 - 26.5 cm UK 6-8
L 27.0 - 29.0 cm UK 9-11
XL 29.5 - 32.0 cm UK 12-14

How to measure

Stand on a sheet of paper with your heel to a wall, mark the tip of your longest toe, and measure heel to mark.

Between two sizes

Between two bands? Take the larger one. These are a close, stretchy fit — a size down grips the toes and shortens the life of the membrane.

The full sizing and fit guide

What it is

A crew-height waterproof sock built in three layers: a knitted lining against your skin, a Porelle® waterproof layer in the middle, and a tough knit on the outside. One height, one build, four colours, four sizes. The same sock whether you bought it for a hill, a commute, a shift or for wudu.

  • Anatomy diagram of a HydroSox sock labelling the ribbed cuff, breathable mesh panel, seamless toe, heel-fit shaping and non-slip sole.

    Anatomy — cuff, mesh panel, seamless toe, heel-fit

  • Cutaway diagram of the three-layer fabric: the Porelle® waterproof barrier, the moisture-management layer, and the breathable inner face.

    The three layers, in section

Three-layer construction

The mechanism behind the waterproof claim, layer by layer.

Inner layer

A soft knitted lining that moves sweat off the foot and stops the membrane sitting against the skin.

Porelle® membrane

A licensed third-party waterproof-breathable membrane — not a name we invented. Water cannot get in; vapour from the foot can get out.

Outer layer

The knitted face that takes the abrasion inside a boot or shoe, and holds the sock's shape when it is not being worn.

What it will not do

The limits are real and physical. No competitor in the mapped set states theirs.

They are not a boot replacement.

One component of a system. If your footwear is wrong for the ground, this will not fix it.

Water over the cuff gets in.

A sock is open at the top. Go deeper than the cuff and you are wet, and no waterproof sock behaves otherwise.

They are not indestructible.

A membrane is a membrane. Abrasion, toenails and the wrong wash cycle will eventually end one.

Breathable does not mean dry inside.

Work hard enough and you will sweat faster than any membrane can move vapour. Breathability slows that. It does not repeal it.

Buy a pair

Back to the top of the page — size, colour and quantity are all there.

Specification

The full specification

Build

Three layers: knitted lining, waterproof layer, outer knit

Waterproof layer

Porelle® membrane

Height

Crew

Sizes

S (UK 3–5) · M (UK 6–8) · L (UK 9–11) · XL (UK 12–14)

Sized by

Foot length in centimetres, not shoe size

Colours

Black · Black / Grey · Black / Navy · White

Care

Cool wash, no softener, no bleach, air dry, never tumble dry or iron

Warranty

Your statutory rights apply in full. No extra warranty at present.

Sent from

Our UK warehouse

Price

£20.00 a pair, or £16.00 each in a five-pack

Colours

The four colours

  • HydroSox waterproof socks in black, crew height, shown upright

    Black

    Disappears under work trousers and inside a boot. The most forgiving on wet ground.

  • HydroSox waterproof socks in black / grey, crew height, shown upright

    Black / Grey

    The everyday pair. Enough contrast to look deliberate with trainers, dark enough to survive a muddy day.

  • HydroSox waterproof socks in black / navy, crew height, shown upright

    Black / Navy

    The same idea in a colder tone. Sits better with blue and grey kit.

  • HydroSox waterproof socks in white, crew height, shown upright

    White

    The running and cycling pair. Shows the dirt, and it’s the one people photograph.

Sizing

Getting the size right

Shoe sizes aren’t consistent between brands. Foot length is, and it’s what actually has to fit inside the sock.

  • Four sizes

    S fits UK 3–5, M fits UK 6–8, L fits UK 9–11, XL fits UK 12–14. Each one is set by foot length in centimetres, published in full on the size guide.

  • Between two sizes

    Take the bigger one. The fit is close and stretchy, so the larger size will not feel loose — and a size down puts constant tension on the waterproof layer.

  • Inside boots and cycling shoes

    They add roughly the bulk of a mid-weight sock. If your footwear is already tight with a thick sock, it’ll be tight with these.

After you buy

Three things worth knowing now

  • Washing them won’t ruin them. Heat will.

    Cool wash, no fabric softener, no bleach, air dry. A waterproof layer fails from heat, softener and rubbing long before it fails from age.

    How to wash them
  • Fourteen days, no reason needed.

    Unworn and in the original packaging. Your statutory rights are the floor here, not the ceiling — the returns page sets out both.

    The returns policy
  • A fault isn’t the same as wear.

    A seam letting water through in the first few weeks is a fault. Thinning at the heel after months is wear. The returns page draws that line honestly.

    The returns page

Questions

About this sock, specifically.

Answered with the same facts as the rest of this page. If one of them contradicts something above, the answer above is the one that is wrong.

Something not here? Phone or email us

Do HydroSox come up big or small?

They run true to the foot-length sizes on the size guide, and they’re a close stretchy fit rather than a loose one. Between two sizes, take the bigger — going down grips your toes and is hard on the waterproof layer.

Do they come in different heights?

No. One height, crew, in every colour and size. Having one build is part of why they’re £20 and not £35.

Are they unisex?

Yes. The sizes run from UK 3 to UK 14 and the sock is the same for everyone. Go by foot length rather than the men’s or women’s size you’re used to.

How many pairs do most people buy?

Two or three. They need washing and air drying between wears, and air drying takes longer than a tumble dryer, so one pair rarely keeps up with a daily problem.

Can I put them in the washing machine?

Cool wash, gentle cycle, inside out, no fabric softener and no bleach. Then air dry away from a radiator. Never tumble dry and never iron — both are heat straight onto the waterproof layer.

What arrives in the parcel?

The pairs you chose, in the colour and size you picked. No boxes, no printed inserts. Keeping the packaging simple is part of what keeps postage out of the price.

Buy a pair

Two decisions and a quantity. No account needed.

Reviews

Nothing here yet

No customer has reviewed this product so far, so there is nothing to show. Reviews will appear in this space once real orders have been placed and used. The standard we will hold them to is set out on its own page.