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        © 2023 Proof ®

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        With a pair for every flow, you’ll be able to find your Proof™-perfect fit. 

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        What level is your leak?

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        Shop period leaks

        Proof™ provides serious protection from bladder leaks, without added bulk. 

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        Shop bladder leaks

        Discrete protection with room to accommodate your growing bump.

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        Shop maternity

        Designed with new moms in mind, leak protection without the bulk. 

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        Shop postpartum

        Go ahead, break a sweat. Our moisture-wicking fabric also reduces odor. 

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        Shop sweat

        Undercover protection for every day of the week.

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        Shop everyday

        Perfect for daily discharge, Proof™ keeps you fresh and dry.

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        Shop discharge

        For in-between days, these undies keep you spotless all day long. 

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        Light

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        Shop spotting
        super-light Icon

        Holds up to 1 Light Tampon or Panty Liner

        Our Patented Leak-Loc® technology keeps you leak-free learn more

        Great For

        panty liner replacement

        light spotting

        odor fighting

        Shop super-light
        light Icon

        Holds up to 1 Regular Tampon or 2 Teaspoons

        Our Patented Leak-Loc® technology keeps you leak-free learn more

        Great For

        panty liner replacement

        light period leaks

        odor fighting

        Shop light
        moderate Icon

        Holds up to 3 Regular Tampons or 6 Teaspoons

        Our Patented Leak-Loc® technology keeps you leak-free learn more

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        moderate period leaks

        replace or back up a tampon, pad, or cup

        odor fighting

        Shop moderate
        heavy Icon

        Holds up to 4 Regular Tampons or 8 Teaspoons

        Our Patented Leak-Loc® technology keeps you leak-free learn more

        Great For

        moderate bladder leaks

        replace or back up a tampon or cup

        odor fighting

        Shop heavy
        super-heavy Icon

        Holds up to 5 Regular Tampons or 10 Teaspoons

        Our Patented Leak-Loc® technology keeps you leak-free learn more

        Great For

        moderate bladder leaks

        maximum overnight period protection

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        Shop super-heavy

        underwear sizing

        Your hip and waist measurements are the most important size when finding the perfect fit.

        HIP
        33-35"
        84-89cm
        35-38"
        89-97cm
        38-41"
        97-104cm
        41-44"
        104-112cm
        44-47"
        112-119cm
        47-50"
        119-127"
        50-54"
        127-137cm"
        WAIST
        23-25"
        58-64cm
        25-28"
        64-71cm
        28-31"
        71-79cm
        31-34"
        79-86cm
        34-37"
        86-94cm
        37-40"
        94-102"
        40-44"
        102-112"
        US
        0-2
        0-2
        4-6
        4-6
        8-10
        8-10
        12-14
        12-14
        16-18
        16-18
        20-22
        20-22
        24-26
        24-26
        AU/UK
        4-6
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        8-10
        8-10
        12-14
        12-14
        16-18
        16-18
        20-22
        20-22
        22-24
        22-24
        26-28
        26-28
        EUR
        32-34
        32-34
        36-38
        36-38
        40-42
        40-42
        44-46
        44-46
        48-50
        48-50
        52-54
        52-54
        56-58
        56-58

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        underwear sizing

        US
        0-6
        0-6
        8-14
        8-14
        16-18
        16-18
        AU/UK
        4-10
        4-10
        12-18
        12-18
        20-22
        20-22
        EUR
        32-36
        32-36
        38-44
        38-44
        46-48
        46-48

        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.

        bra sizing

        Your bra measurements are the most important size when finding the perfect fit.
        32
        70
        70
        XS
        XS
        XS
        XS
        XS
        XS
        S
        S
        S
        M
        M
        M
        M
        M
        M
        L
        L
        L
        34
        75
        75
        S
        S
        S
        S
        S
        S
        S
        S
        S
        M
        M
        M
        L
        L
        L
        L
        L
        L
        36
        80
        80
        S
        S
        S
        M
        M
        M
        M
        M
        M
        L
        L
        L
        L
        L
        L
        XL
        XL
        XL
        38
        85
        85
        M
        M
        M
        M
        M
        M
        L
        L
        L
        L
        L
        L
        XL
        XL
        XL
        XL
        XL
        XL
        40
        90
        90
        L
        L
        L
        L
        L
        L
        XL
        XL
        XL
        XL
        XL
        XL
        XL
        XL
        XL
        42
        95
        95
        L
        L
        L
        XL
        XL
        XL
        XL
        XL
        XL
        XL
        XL
        XL

        teen underwear sizing

        Your hip and waist measurements are the most important size when finding the perfect fit.
        PROOF TEEN ALPHA
        S
        M
        L
        XL
        2XL
        Girls Size
        8/10
        10/12
        12/14
        14/16
        Coming Soon
        Waist Measure
        23"-24"
        24"-25"
        25"-26"
        26"-27"
        Coming Soon
        Hip Measure
        28"-30"
        30"-32"
        32"-34"
        34"-36"
        Coming Soon
        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.
        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.
        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.
        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.
        Measure around your body as shown.

        If your measurements fall into different size categories, your hip measurement will be most accurate.