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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 helps lock in leaks
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        Shop period leaks

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

        Our Patented Leak-Loc® technology helps lock in leaks
        learn more

        Teaspoons Icon

        What level is your leak?

        Moderate

        Heavy

        Super-Heavy

        Shop bladder leaks

        Discrete protection with room to accommodate your growing bump.

        Our Patented Leak-Loc® technology helps lock in leaks
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        What level is your leak?

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        Light

        Moderate

        Shop maternity

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

        Our Patented Leak-Loc® technology helps lock in leaks
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        Heavy

        Super-Heavy

        Shop postpartum

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

        Our Patented Leak-Loc® technology helps lock in leaks
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        super-heavy

        Shop sweat

        Undercover protection for every day of the week.

        Our Patented Leak-Loc® technology helps lock in leaks
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        Light

        Shop everyday

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

        Our Patented Leak-Loc® technology helps lock in leaks
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        Shop discharge

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

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        What level is your leak?

        Super-Light

        Light

        Moderate

        Shop spotting
        super-light Icon

        Holds up to 1 light tampon

        Our Patented Leak-Loc® technology helps lock in leaks
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        Great For

        • Light spotting
        • Panty liner alternative
        • Back up a tampon
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        • Sweat
        Shop super-light
        light Icon

        Holds up to 1 regular tampon

        Our Patented Leak-Loc® technology helps lock in leaks
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        Great For

        • Light periods and spotting
        • Back up a tampon
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        • Fights odor
        Shop light
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        Holds up to 3 regular tampons

        Our Patented Leak-Loc® technology helps lock in leaks
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        Holds up to 4 regular tampons

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        Great For

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        sizing guide

        underwear sizing

        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
        4-6
        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

        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

        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.