Knickers that actually fit your body!

CYA (aka Cover Your A**) is a new undie brand that promises to deliver your most comfy go-to knickers.

Are you tired of those ill fitting undies too?

Most underwear brands offer very limited sizing e.g. S, M, L, etc. or 2,4,6, etc. like dress sizes. These sizes assume a standard 10 inch difference between your waist and hip measurements. But in reality this can range from as low as 2 inches to as high as 15+ inches.

When each bum is so unique, why shouldn’t the sizing be?

We’re making knickers tailored to you down to an inch.

Back view of a woman in black bra and high-waisted underwear, with hair in a bun against a plain background.
Back view of a person wearing black lingerie against a plain background.

We are bringing Bra Sizing to underwear.

We are revolutionizing underwear with a new, closest-fit sizing system just for undies, by bringing Bra Sizing to underwear.

Rather than just a Small, Medium or Large, with CYA you can pick from one of 50 sizes we currently offer and you will now know if your bottom is a 32B, a 33F, or a 35C. This is based on your waist and hip measurements (just like with bras - duh!),

We are bringing the tried and tested sizing system from your top to your bottom. Our methodology means that our briefs will hug your body in all the right places and fit you like a glove.

Are you ready to give your bum the space it deserves?

Three women wearing black lingerie posing on a white bed with a neutral background.

What’s your bum size?

Three women standing together in black underwear, facing away with arms around each other.

How it works

Step 1: Take your measurements

Measure your Mid-Waist and Hips in inches.

Step 2: Determine your bum size

Enter your measurements into our calculator and find out your bum size.

Step 3: Place your order

Enjoy the undies that are sure to become your go-to pair.

Woman in blue sweater and comfy knicker lying on a bed, smiling and stretching with eyes closed.

Say CYA to excess fabric, too tight a waist, or that uncomfortable wedgie following you around all day.

At CYA, we believe that your bottom deserves as much attention and care as your top and we’re here to give your bum the space it deserves!

Our first customers love the close fit

  • Person wearing a white eyelet blouse and sunglasses standing in front of a building with yellow shutters and a "Margaritaville" sign.

    “Fits me perfectly, so soft and comfortable - no wedgies ever!"

    - Marina Vieira

  • Woman in red dress holding a child in an outdoor garden setting with wooden chairs and tables.

    “The fit is perfect and it works with any kind of outfit! Definitely becoming my go to undies. PS: They also have a nice clinching effect for us new moms!

    - Efe Braimah

  • A woman smiling at an outdoor event, wearing a striped shirt and floral hair accessory.

    "Love these undies! Great fit, great quality, my new go-to!"

    - Kate Wharton

  • Person sitting on a rock wearing outdoor clothing next to a brown and black dog on a leash in a forest setting.

    "Knickers haven't had an upgrade in too long. So glad to finally have undies that are the right size and fit for me!"

    - Sam Allen

Exciting news - we are live and are selling our first 1000+ undies, just in time to start your 2025 right! Say goodbye to wedgies and wasted waistbands — get ready for underwear designed just for you <3

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