Size Guide
Women Tops
incm | XS | S | M | L | XL |
|---|---|---|---|---|---|
| US Size | 0 | 0–2 | 4–6 | 8–10 | 12–14 |
| Bust (incm) | 31.580 | 32.583 | 34.588 | 36.593 | 38.598 |
| Waist (incm) | 22.557 | 24.562 | 26.567 | 28.572 | 30.577 |
| Size | US Size | Bust (incm) | Waist (incm) |
|---|---|---|---|
| XS | 0 | 31.580 | 22.557 |
| S | 0–2 | 32.583 | 24.562 |
| M | 4–6 | 34.588 | 26.567 |
| L | 8–10 | 36.593 | 28.572 |
| XL | 12–14 | 38.598 | 30.577 |

How To Measure
Measurements should be taken directly on your body.
Bust: Measure around the fullest part of your bust, just under your arms. Keep the tape level.
Waist: Measure around the narrowest part of your waist, between your ribs and hips. Keep the tape comfortable, not tight.
Women Bottoms
incm | XS | S | M | L | XL |
|---|---|---|---|---|---|
| US Size | 0 | 0–2 | 4–6 | 8–10 | 12–14 |
| Waist (incm) | 22.557 | 24.562 | 26.567 | 28.572 | 30.577 |
| Hips (incm) | 33.585 | 3589 | 3794 | 3999 | 41104 |
| Size | US Size | Waist (incm) | Hips (incm) |
|---|---|---|---|
| XS | 0 | 22.557 | 33.585 |
| S | 0–2 | 24.562 | 3589 |
| M | 4–6 | 26.567 | 3794 |
| L | 8–10 | 28.572 | 3999 |
| XL | 12–14 | 30.577 | 41104 |

How To Measure
Measurements should be taken directly on your body.
Waist: Measure around the narrowest part of your waist, between your ribs and hips. Keep the tape comfortable, not tight.
Hips: With feet together, measure around the widest part of your hips.
Women Bottoms – Original Sizing
incm | XS | S | M | L | XL |
|---|---|---|---|---|---|
| US Size | 0 | 0–2 | 4–6 | 8–10 | 12–14 |
| Waist (incm) | 22.557 | 24.562 | 26.567 | 28.572 | 30.577 |
| Hips (incm) | 33.585 | 3589 | 3794 | 3999 | 41104 |
| Size | US Size | Waist (incm) | Hips (incm) |
|---|---|---|---|
| XS | 0 | 22.557 | 33.585 |
| S | 0–2 | 24.562 | 3589 |
| M | 4–6 | 26.567 | 3794 |
| L | 8–10 | 28.572 | 3999 |
| XL | 12–14 | 30.577 | 41104 |

How To Measure
Measurements should be taken directly on your body.
Waist: Measure around the narrowest part of your waist, between your ribs and hips. Keep the tape comfortable, not tight.
Hips: With feet together, measure around the widest part of your hips.
Women Bras
incm | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| US Cup Size | 26D–DD / 28A–C | 28D–DD / 30A–C | 30D–DD / 32A–C | 32D–DD / 34A–C | 34D–DD / 36A–C | 36D–DD / 38A–C |
| Bust (incm) | 31.580 | 32.583 | 34.588 | 36.593 | 38.598 | 40.5103 |
| Size | US Cup Size | Bust (incm) |
|---|---|---|
| XXS | 26D–DD / 28A–C | 31.580 |
| XS | 28D–DD / 30A–C | 32.583 |
| S | 30D–DD / 32A–C | 34.588 |
| M | 32D–DD / 34A–C | 36.593 |
| L | 34D–DD / 36A–C | 38.598 |
| XL | 36D–DD / 38A–C | 40.5103 |

How To Measure
Measurements should be taken directly on your body.
Bust: Measure around the fullest part of your bust, just under your arms. Keep the tape level.
Cup size: Start with your usual bra size, then find it in the US Cup Size row.
Men Tops
incm | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Chest (incm) | 35–3689–91 | 36–3891–97 | 38–3997–99 | 39–4199–104 | 41–43104–109 |
| Waist (incm) | 22–2556–64 | 26–2966–74 | 29–3374–84 | 33–3584–89 | 35–3889–97 |
| Size | Chest (incm) | Waist (incm) |
|---|---|---|
| XS | 35–3689–91 | 22–2556–64 |
| S | 36–3891–97 | 26–2966–74 |
| M | 38–3997–99 | 29–3374–84 |
| L | 39–4199–104 | 33–3584–89 |
| XL | 41–43104–109 | 35–3889–97 |

How To Measure
Measurements should be taken directly on your body.
Chest: Measure around the fullest part of your chest, just under your arms. Keep the tape level.
Waist: Measure around the narrowest part of your waist, between your ribs and hips. Keep the tape comfortable, not tight.
Men Bottoms
incm | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Waist (incm) | 22–2556–64 | 26–2966–74 | 29–3374–84 | 33–3584–89 | 35–3889–97 |
| Size | Waist (incm) |
|---|---|
| XS | 22–2556–64 |
| S | 26–2966–74 |
| M | 29–3374–84 |
| L | 33–3584–89 |
| XL | 35–3889–97 |

How To Measure
Measurements should be taken directly on your body.
Waist: Measure around the narrowest part of your waist, between your ribs and hips. Keep the tape comfortable, not tight.
Vests Tahoe 1.0
incm | XS | S | M |
|---|---|---|---|
| Chest (incm) | 26–3066–76 | 30–3476–86 | 34–4086–102 |
| Waist (incm) | 24–2861–71 | 28–3371–84 | 34–3886–97 |
| Size | Chest (incm) | Waist (incm) |
|---|---|---|
| XS | 26–3066–76 | 24–2861–71 |
| S | 30–3476–86 | 28–3371–84 |
| M | 34–4086–102 | 34–3886–97 |

How To Measure
Measurements should be taken directly on your body.
Chest: Measure around the fullest part of your chest, just under your arms. Keep the tape level.
Waist: Measure around the narrowest part of your waist, between your ribs and hips. Keep the tape comfortable, not tight.
Vests Tahoe 2.0
incm | XXS | XS | S/M | M/L |
|---|---|---|---|---|
| Chest (incm) | 29–3274–82 | 32–3582–90 | 35–3990–98 | 39–4298–106 |
| Size | Chest (incm) |
|---|---|
| XXS | 29–3274–82 |
| XS | 32–3582–90 |
| S/M | 35–3990–98 |
| M/L | 39–4298–106 |
Men's: find your height, then your weight
| Weight / Height | Under 5'7"Under 170 cm | 5'7"–5'11"170–180 cm | Over 5'11"Over 180 cm |
|---|---|---|---|
| Under 132 lbsUnder 60 kg | XXS | XXS | XXS |
| 132–150 lbs60–68 kg | XS | XS | XXS |
| 151–172 lbs69–78 kg | S/M | XS | XS |
| 173–194 lbs79–88 kg | M/L | S/M | S/M |
| Over 194 lbsOver 88 kg | M/L | M/L | M/L |
Women's: find your band, then your cup
| Band / Cup | A/B | C | D/E+ |
|---|---|---|---|
| 3270 | XXS | XXS or XS | XS |
| 3475 | XXS | XS | XS or S/M |
| 3680 | XS | XS or S/M | S/M |
| 3885 | S/M | S/M or M/L | M/L |
| 40+90+ | M/L | M/L | Try on to check fit |
Fit tips
Bigger cup (C/D+)? Don't size up. Size by your band, not your cup. A snug band keeps the vest stable.
Will it feel tight across the chest? No. The adjustable bungee lets you let out the front chest cord about 1–2" (3–5 cm), so the band stays put and your chest has room.
How do I know it's adjusted right? With the vest on and front bottles filled, take your deepest breath. At the top of the breath you should be able to slide two fingers between the cord and your sternum, with no pressure on your ribs.

How To Measure
Measurements should be taken directly on your body.
Chest: Measure around the fullest part of your chest, just under your arms. Keep the tape level.
Band: Measure snugly around your ribcage, just under your bust. This is the number to size by.
Belts
Body measurements
incm | XXS | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| Body (waist or hips) (incm) | 18–2146–53 | 22–2556–64 | 26–2966–74 | 29–3274–81 | 32–3581–89 | 35–3889–97 | 38–4897–122 |
| Men's Pant Size | 20–23 | 23–26 | 26–30 | 30–32 | 32–36 | 36–41 | 42–48 |
| Women's Dress Size | 00 | 0 | 2–4 | 6–8 | 10–12 | 14–16 | 18–20 |
| Size | Body (waist or hips) (incm) | Men's Pant Size | Women's Dress Size |
|---|---|---|---|
| XXS | 18–2146–53 | 20–23 | 00 |
| XS | 22–2556–64 | 23–26 | 0 |
| S | 26–2966–74 | 26–30 | 2–4 |
| M | 29–3274–81 | 30–32 | 6–8 |
| L | 32–3581–89 | 32–36 | 10–12 |
| XL | 35–3889–97 | 36–41 | 14–16 |
| XXL | 38–4897–122 | 42–48 | 18–20 |
Product measurements
| XXS | XS | S | M | L | XL | XXL | |
|---|---|---|---|---|---|---|---|
| Unstretched (incm) | 2461 | 2564 | 2666 | 2871 | 3179 | 3486 | 40102 |
| Stretched (incm) | 2871 | 3384 | 3691 | 3897 | 43109 | 48122 | 58147 |
| Size | Unstretched (incm) | Stretched (incm) |
|---|---|---|
| XXS | 2461 | 2871 |
| XS | 2564 | 3384 |
| S | 2666 | 3691 |
| M | 2871 | 3897 |
| L | 3179 | 43109 |
| XL | 3486 | 48122 |
| XXL | 40102 | 58147 |
Fit tip: FlipBelt should fit snug so it stays put while you run. Between sizes? Size down.

How To Measure
Measurements should be taken directly on your body.
Where you'll wear it: Measure wherever you plan to wear your belt, at your natural waist or lower on your hips, and use that number.
Socks
| Small | Medium | |
|---|---|---|
| Men's US | N/A | 7–10 |
| Women's US | 5–9 | 9–12 |
| EU | 35–39 | 40–44 |
| Size | Men's US | Women's US | EU |
|---|---|---|---|
| Small | N/A | 5–9 | 35–39 |
| Medium | 7–10 | 9–12 | 40–44 |
How To Measure
Shoe size: Choose the sock size that matches your usual shoe size.
Not sure about sizing?
You have 30 days to try on at home and decide if an item is right for you.

