Men's OOmy Zen - Black

$29.98
$99.95
$29.98
A minimalist recovery masterpiece, the OOmy Zen distills years of expertise into a simple, simply revolutionary active...
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A minimalist recovery masterpiece, the OOmy Zen distills years of expertise into a simple, simply revolutionary active recovery shoe. No unnecessary bells or whistles. Just pure, peaceful relief with every step. Featuring a seamless circular knit upper with Zen bands that hug heel and instep, and the advanced OOmy footbed with our proprietary OOfoam™ technology that absorbs impact like no other.  Zen is balance: mobility, pliability, lightness, power, integrated into a shoe made to move the way your body moves.

It’s easy to make a complicated shoe. But simplicity…that’s hard. For the Zen, less is more. Less constriction, more freedom. Less weight, more mobility. Less pressure, more relief. Think of it as a shoe that lets your body take a deep, restorative breath. A harmonious blend of precise engineering and cushion that transcends comfort, the Zen is the foundation of your new mantra, your secret to active recovery. Say it with us…”fooooooammmmm”

Features & Benefits

  • Impact-absorbing OOfoam™ technology in OOFOS’ advanced OOmy footbed geometry.
  • 360-degree seamless knit upper developed to reduce pressure for a secure, sock-like fit, feel and flexibility.
  • Pull tabs & engineered knit collar allow for ease of entry and effortless wearability, while zen bands across the heel and instep hug your foot for a secure fit.
  • Rounded, cupped heel designed to enhance impact-absorption and stability with every step.
  • Lightweight, flexible & packable for ultimate travel ability.
  • Machine Washable. Air Dry.
  • Impact-absorbing OOfoam™ technology in OOFOS’ advanced footbed geometry.
  • Engineered knit collar for a secure fit, easy entry, and effortless wearability.
  • Rounded, cupped heel designed to enhance impact-absorption and stability with every step.
  • Lightweight, flexible & packable for ultimate travel ability.
  • Machine Washable. Air Dry.
Men's OOmy Zen - Black

Men's OOmy Zen - Black

$99.95 $29.98

Men's OOmy Zen - Black

$99.95 $29.98
Size: 8
Color: Black
Size chart
US Sandals Size Guide | Men & Women

Men's Sandals Size Chart

US sizes with foot length (inches & cm) – find your perfect fit.

US Men's Size Foot Length (inches) Foot Length (cm) EU Size Width Recommendation
6 9.4" 23.8 cm 39 Narrow to Medium
7 9.7" 24.6 cm 40 Medium (D)
8 10.0" 25.4 cm 41 Medium (D)
9 10.3" 26.2 cm 42 Medium – Wide
10 10.6" 27.0 cm 43 Wide (2E)
11 11.0" 27.9 cm 44 Wide (2E)
12 11.3" 28.7 cm 45 Extra Wide
13 11.6" 29.5 cm 46 Extra Wide
📐 Measure from heel to longest toe. For sandals, allow 0.2–0.4" (0.5–1 cm) extra space.

🇺🇸 Men's Sandals – How to get the right fit

• Measure your foot at the end of the day when feet are slightly swollen.
• If you are between sizes, go up to the next half/full size for sandals (open toe needs wiggle room).
• For wide feet: look for brands offering "Wide" or "2E" options. Leather straps usually stretch.
• Popular US brands: Teva, Birkenstock (convert EU to US), Crocs, Nike slides. Always check brand-specific chart.
• Pro tip: Wear the socks (or no socks) you plan to use with the sandals while measuring.


📏 Quick conversion: 1 inch = 2.54 cm | US men's = (foot length in cm - 22) × 1.5 approx.

Women's Sandals Size Chart

US sizes with foot length (inches & cm) – comfortable summer fit.

US Women's Size Foot Length (inches) Foot Length (cm) EU Size Width Recommendation
5 8.7" 22.0 cm 35 Narrow (AA)
6 8.9" 22.5 cm 36 Narrow to Medium
7 9.2" 23.5 cm 37 Medium (B)
8 9.5" 24.1 cm 38 Medium (B)
9 9.8" 25.0 cm 39 Medium – Wide
10 10.1" 25.7 cm 40 Wide (D)
11 10.4" 26.5 cm 41 Wide (D)
12 10.7" 27.2 cm 42 Extra Wide
✨ For half sizes, we recommend sizing up if you have wider feet or prefer thicker straps.

👡 Women's Sandals – US Fit Guide

• Always measure both feet; use the larger foot's length to select size.
• Sandals with arch support (e.g. Birkenstock) may require break-in; follow size chart carefully.
• If your foot length is exactly at the upper limit of a size, choose the next size for comfort.
• Width matters: check if the brand offers "wide" (D) or "narrow" (AA) for slide-ons.
• Pro tip: for toe-post sandals (flip-flops), ensure the strap area does not rub.


📐 Measurement guide: Place foot on paper, mark heel and longest toe, measure distance.

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