Size guide
Get the fit right and the leaks stop.
Almost every leak complaint we see is a fit problem rather than a product problem. A cover that is too loose at the thigh cannot hold anything back, no matter how good the material is. Two minutes with a tape measure fixes it.
How to measure
Thigh
Measure around the fullest part of your thigh, high up near the groin, over whatever you normally wear underneath. This is the single most important number — the leg opening is where leaks start.
Waist
Measure around your natural waist, again over the diaper or liner. Note that our covers have a range rather than a single number, because the elastic is meant to stretch.
Height & weight
Use the height and weight table as a fast starting point, then confirm against the waist and thigh ranges. If the two disagree, trust the thigh measurement.
Product 1 & 2
Gray Waterproof Plastic Pants
Sizes S – 3XL · View product
| Height / Weight | 100–139 lb | 140–159 lb | 160–179 lb | 180–199 lb | 200–229 lb | 230–259 lb | >260 lb |
|---|---|---|---|---|---|---|---|
| 4'10"–5'1" | S | M | L | L | XL | 2XL | 2XL |
| 5'2"–5'5" | S | M | L | XL | XL | 2XL | 2XL |
| 5'6"–5'9" | S | M | L | XL | 2XL | 2XL | 3XL |
| 5'10"–6'1" | M | L | L | XL | 2XL | 2XL | 3XL |
| 6'2"–6'8" | L | XL | XL | 2XL | 2XL | 3XL | 3XL |
If you're between sizes, consider sizing up for added comfort.
| Measurement | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|
| Waist | 23–32 | 24–39 | 26–44 | 28–48 | 30–56 | 32–62 |
| Thigh | 14–22 | 16–24 | 17–27 | 18–29 | 20–33 | 22–36 |
| Length | 14.8 | 15.2 | 16 | 16.8 | 17.2 | 18 |
Waist and thigh are ranges; length is a single measurement in inches.
Product 3
High-Waist Blue Rubber Pants
Sizes S – 3XL · View product
| ft/in (cm) | 100–139 lb (45–63kg) | 140–159 lb (64–72kg) | 160–179 lb (73–81kg) | 180–199 lb (82–90kg) | 200–229 lb (91–104kg) | 230 lb+ (105+kg) |
|---|---|---|---|---|---|---|
| 4'10"–5'1" (148–155 cm) | S | M | L | XL | 2XL | 3XL |
| 5'2"–5'5" (156–165 cm) | S | M | L | XL | 2XL | 3XL |
| 5'6"–5'9" (166–175 cm) | M | M | L | XL | 2XL | 3XL |
| 5'10"–6'1" (176–185 cm) | M | L | XL | XL | 2XL | 3XL |
| 6'2"–6'5" (186–195 cm) | L | XL | XL | 2XL | 2XL | 3XL |
| 6'6"+ (196+ cm) | L | 2XL | 2XL | 2XL | 3XL | 3XL |
| Size | Waist | Thigh |
|---|---|---|
| S | 23–35" (58–88 cm) | 15–23" (40–60 cm) |
| M | 25–38" (64–98 cm) | 16–24" (42–62 cm) |
| L | 27–40" (70–102 cm) | 18–26" (46–66 cm) |
| XL | 30–43" (79–112 cm) | 19–28" (48–72 cm) |
| 2XL | 32–46" (82–118 cm) | 20–29" (50–74 cm) |
| 3XL | 34–48" (87–124 cm) | 21–30" (52–76 cm) |
Product 3
Leakproof Boxer Briefs
Sizes M – 5XL · View product
| Measurement | M | L | XL | 2XL | 3XL | 4XL | 5XL |
|---|---|---|---|---|---|---|---|
| Waist | 28–40in (73–104cm) | 29–42in (76–108cm) | 31–44in (80–112cm) |
33–43in (84–116cm) | 35–46in (90–120cm) | 36–49in (94–126cm) | 39–51in (99–130cm) |
| Thigh | 18–23in (46–60cm) | 19–24in (48–64cm) | 20–26in (50–68cm) |
21–27in (53–70cm) | 22–28in (56–74cm) | 23–29in (60–76cm) | 24–30in (62–78cm) |
| Weight / Height | 120–160 lb (54–73kg) | 161–190 lb (74–86kg) | 191–220 lb (87–100kg) | 221–250 lb (101–113kg) | 251–280 lb (114–127kg) | 281 lb+ (128kg+) |
|---|---|---|---|---|---|---|
| 5'2"–5'5" (157–165 cm) | M | L | XL | 2XL | 3XL | 4XL |
| 5'6"–5'9" (168–175 cm) | L | XL | 2XL | 3XL | 4XL | 5XL |
| 5'10"–6'1" (178–185 cm) | XL | 2XL | 3XL | 4XL | 5XL | 5XL |
| 6'2"–6'5" (188–196 cm) | 2XL | 3XL | 4XL | 5XL | 5XL | 5XL |
| 6'6"+ (198+ cm) | 3XL | 4XL | 5XL | 5XL | 5XL | 5XL |
If two sizes both look plausible, take the larger one — a snug fit at the leg opening is what keeps you dry.
Still unsure between two sizes?
Take the larger one. Our covers and briefs are elasticated, so a slightly bigger size still seals — a size that is too small will not.