Airfeet Classic O2 Boot Inserts | US Men's Size X-Large (13-15.5)

Airfeet Classic O2 Boot Inserts | US Men's Size X-Large (13-15.5), , large image number 0
Airfeet Classic O2 Boot Inserts | US Men's Size X-Large (13-15.5), , large image number 1

Airfeet Classic O2 Boot Inserts | US Men's Size X-Large (13-15.5)

$41.95
sku: AF00CO2X

Airfeet Classic O2 Boot Inserts | US Men's Size X-Large (13-15.5)

  • In Stock
Free shipping on all CONUS orders over $75

All-Day Comfort & Support
AIRfeet® CLASSIC O2 insoles are designed to ergonomically disperse impact energy, offering superior comfort without the bulk. The ultra-thin 2mm design fits seamlessly in all footwear—simply place them on top of your existing footbed or insert them directly.


Key Features

  • Super Thin & Reversible: 2mm thickness fits any shoe. Patented flip-flop hole for easy fit.
  • Advanced Technology: Massaging, dynamic, and shock-absorbing for all-day relief.
  • Compliments Orthotics: Perfect addition to your existing foot care routine.
  • Machine Washable & Durable: Easy to clean and comes with a 6-month warranty.
  • Certified Quality: CE certified, and designed to meet ASTM F1614 shock attenuation standards.

Proven Relief for:

  • Plantar Fasciitis
  • Flat Feet
  • Neuropathy
  • Leg Fatigue
  • Circulation Issues
  • Back, Leg, Knee, & Foot Pain

**Please note that these boot inserts are available only in US Men's size X-Large (13-15.5).

Military Surplus Sizing Guide

Due to the wide variety of surplus clothing we carry, a standardized sizing guide helps customers find the best fit. However, military surplus can vary significantly in fit and cut. This chart serves as a general reference rather than an exact, tailor-level measurement.

Each military has its own sizing system, which is why we’ve created this guide to help you understand how we size our surplus garments.

Jacket & Shirt Sizing

When an official military size chart is unavailable, we measure each jacket or shirt from armpit to armpit (PtP) to estimate its fit. If a measurement falls between sizes, we round it down. For example, a shirt with a 19.75" PtP is categorized as a Small rather than a Medium.

Sizing Chart (Armpit-to-Armpit Measurement)

  • 14"-15" PtP = XXS
  • 16"-17" PtP = XS
  • 18"-19" PtP = Small
  • 20"-21" PtP = Medium
  • 22"-23" PtP = Large
  • 24"-25" PtP = XL
  • 26"-27" PtP = XXL
  • 28"-29" PtP = 3XL

Pant Sizing

We convert military pants to standard U.S. waist and inseam sizes. If a pair measures between sizes, we round down. For example, a 33" waist is listed as a 32" waist.

How We Measure Pants:

  • Waist: Pants are laid flat, and we measure straight across the waistband. This number is doubled to determine the U.S. waist size. (Example: A 16" flat waist measurement equates to a U.S. 32" waist.)
  • Inseam: We measure from the crotch seam to the bottom of the cuff. (Example: A measurement of 30" from crotch to cuff is listed as a 30" inseam or 30L.)

Swiss Link maintains its inventory on-site and ships directly from our warehouse in Chico, California.

  • Standard Processing Time: Orders typically ship within 3-5 business days.
  • Peak Season Delays: During high-demand periods, processing may take 7-10 business days or longer.

As a small business, we appreciate your patience and support. If you have any questions about your order, feel free to reach out!