Name: OOFOS Men's OOmy Zen Sneaker
Brand: OOFOS
SKU: 5088CHALK
Price: 100.00 USD
Availability: OutOfStock

$100.00

Shipping calculated at checkout.

Color

Chalk

Size —

Size chart

Unisex sizing: women’s = men’s + 2 · Wear a half size? Women size up, men size down

Find your OOFOS size with OOFOS’s official unisex size chart and half-size advice — or stop in for a fitting at our Kettering, Ohio store.

Shop OOFOS →

How it fits

Many OOFOS styles — like the OOahh slide, OOriginal sandal and OOcloog — are unisex. They’re labeled with both sizes: a women’s size is always two sizes larger than the men’s (for example, M6/W8 fits a men’s 6 or a women’s 8).

The OOlala is a women’s style, built on a narrower last than the OOriginal and OOahh.

Half sizes

If you normally wear a whole size, order that same whole size.

If you normally wear a half size: women, order a half size up; men, order a half size down.

Some OOFOS shoes, like the OOmg, come in half sizes.

Unisex size chart

US Men	US Women	UK Men	UK Women	EU
2	4	1	2	35
3	5	2	3	36
4	6	3	4	37
5	7	4	5	38
6	8	5	6	39
7	9	6	7	40
8	10	7	8	41
9	11	8	9	42
10	12	9	10	43
11	13	10	11	44
12	14	11	12	45
13	15	12	13	46
14	16	13	14	47
15	17	14	15	48

Need help? We measure every customer with a Brannock device at our Kettering store. Stop in for a fitting, or call us at 937.298.1801 and we’ll help you choose. Ready to shop? Shop all OOFOS →

Source: OOFOS size conversion chart and sizing guidance (OOFOS) · Last checked October 2026

9.5

10.5

11.5

12.5

Width : M — Medium

Only 1 left in size 9
Backordered, shipping soon

Free shipping on this item
30-day returns & exchanges, in store or by mail
Ships in 1 business day · 2-day & 3-day options at checkout

Fit & Feel

Lightweight
Breathable
Odor Resistant

Neutral gait · Everyday wear

Zen is where recovery that’s light meets relief that's effortless. With everything you need and nothing you don't, it's the perfect companion for days meant to feel easy. The seamless, sock-like knit upper stretches and flexes with every step. Convenient pull tab details and an engineered collar create a secure, easy-on fit. A rounded heel cup stabilizes the foot, while proprietary OOfoam™ technology cushions every step and helps relieve pressure on your joints. Stressed about your next trip? Pack it for complete serenity underfoot.

Features

Impact-absorbing OOfoam™ technology in OOFOS' advanced footbed geometry
Seamless, sock-like knit upper that stretches and flexes with every step
Pull tabs and an engineered knit collar for a secure, easy-on fit
Rounded, cupped heel designed to enhance impact absorption and stability with every step
Lightweight, flexible and packable for travel
Closed-cell foam is designed to minimize odor
Machine washable; air dry

Stock Number: 5088CHALK

Most orders ship within 1 business day

During busy seasons, processing may take up to 2 days

Same‑Day Shipping

Mon–Fri: Orders placed by 12 PM EST
Saturday: Orders placed by 10 AM EST
Orders placed after these times, on Sundays, or on holidays ship the next business day

Free Shipping
Free shipping on U.S. orders of $75 or more (continental U.S.)
Orders under $75 ship for a flat $5

Carriers Used
Orders ship via USPS or UPS
Weekend/late‑Friday orders may ship USPS to meet timing requirements

Alaska, Hawaii, Military & U.S. Territories
Shipped via USPS Standard/Priority Mail
Typical transit times:
AK/HI/Territories: ~3 days (not guaranteed)
Military addresses: 10–15 days

Transit Times
USPS Priority Mail may display “1‑Day,” “2‑Day,” or “3‑Day,” which reflects USPS’s estimate after the package ships
These estimates do not include processing time.

Need It Faster?
UPS 3 Day Air ($20) and UPS 2nd Day Air ($25) are available at checkout

SKU: 5088CHALK

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