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Period Tips & Hacks

Proof Blog for what helps with periods

May 25, 2022
How to Help Prepare Your Daughter for Her First Period
May 19, 2022
Proof® Announces Nationwide Expansion of Unders Line into Walmart
Apr 27, 2022
What should I eat while menstruating?
Mar 28, 2022
How to manage your period at work
Mar 17, 2022
Tips for Traveling While On Your Period
Mar 14, 2022
Why Do I Leak After Peeing?
Mar 10, 2022
Vaginal Discharge During Pregnancy
Mar 07, 2022
International Women's Day 2022
Feb 28, 2022
How to Stop Heavy Periods Naturally
Feb 21, 2022
Why does my period blood smell so bad?
Feb 14, 2022
How to Stop Bladder Leaks During Exercise
Feb 03, 2022
14 Ways to Sleep Better on Your Period
Dec 22, 2021
Vagina Care: How to Keep Your Vagina Healthy
Dec 17, 2021
8 Best Ways to Stop Period Cramps ASAP
Dec 12, 2021
How to Track Your Period Cycle: Why You Should + 5 Top Apps 
Dec 08, 2021
Top Hacks for Dealing with Your Period at School
Dec 01, 2021
4 Different Types of Urinary Incontinence
Nov 22, 2021
Postpartum Care: Caring for Your Body After Giving Birth
Nov 17, 2021
What to Expect After Bladder Sling Surgery
Oct 27, 2021
Why is My Period Blood Black?
Oct 27, 2021
Is it normal to pee a lot during your period?
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Proof® is the premier FDA registered solution for period underwear and leak proof protection.

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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?

Light

Moderate

Heavy

Super-Heavy

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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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 keeps you leak-free learn more

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What level is your leak?

Super-Light

Light

Moderate

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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What level is your leak?

Moderate

Heavy

Super-Heavy

Shop postpartum

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

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

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What level is your leak?

heavy

super-heavy

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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What level is your leak?

Super-Light

Light

Shop everyday

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

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

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What level is your leak?

Super-Light

Light

Moderate

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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What level is your leak?

Super-Light

Light

Moderate

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

sweat

discharge

light spotting

odor reduction

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

sweat

discharge

spotting

light period leaks

odor reduction

Shop light
moderate Icon

Holds up to 3 Regular Tampons or 6 Teaspoons

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

Great For

moderate period leaks

sweat

light bladder leaks

replace or back up a tampon, pad, or cup

odor reduction

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

sweat

heavy period leaks

replace a pad

replace or back up a tampon or cup

odor reduction

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

sweat

heavy period leaks

replace a pad

replace or back up a tampon or cup

maximum overnight period protection

odor reduction

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"
119-127cm
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"
94-102cm
40-44"
102-112cm
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.

Find your waist measure by leaning over to one side. Where your body naturally creases is your where you will place the tape. Measure parallel to the ground.

For your hip measurement, turn to the side and locate the fullest part of your booty. Place the tape around your body, parallel to the floor, around the widest and fullest part of your hips and tush.

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

Measure around your body as shown.

Find your waist measure by leaning over to one side. Where your body naturally creases is your where you will place the tape. Measure parallel to the ground.

For your hip measurement, turn to the side and locate the fullest part of your booty. Place the tape around your body, parallel to the floor, around the widest and fullest part of your hips and tush.

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

Measure around your body as shown.

Find your waist measure by leaning over to one side. Where your body naturally creases is your where you will place the tape. Measure parallel to the ground.

For your hip measurement, turn to the side and locate the fullest part of your booty. Place the tape around your body, parallel to the floor, around the widest and fullest part of your hips and tush.

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

Measure around your body as shown.

Find your waist measure by leaning over to one side. Where your body naturally creases is your where you will place the tape. Measure parallel to the ground.

For your hip measurement, turn to the side and locate the fullest part of your booty. Place the tape around your body, parallel to the floor, around the widest and fullest part of your hips and tush.

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

Measure around your body as shown.

Find your waist measure by leaning over to one side. Where your body naturally creases is your where you will place the tape. Measure parallel to the ground.

For your hip measurement, turn to the side and locate the fullest part of your booty. Place the tape around your body, parallel to the floor, around the widest and fullest part of your hips and tush.

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