Side view of Unisex OS1st Thin Air Performance no-show socks in black and grey – featuring lightweight mesh fabric, targeted cushioning, and seamless fit.
Side View of OS1st TA4 Thin Air No-Show Sock – featuring lightweight, breathable knit fabric, moderate compression for foot stability, and cushioned soles for enhanced comfort.
Side View of OS1st TA4 Thin Air No-Show Sock – featuring lightweight, breathable knit fabric, moderate compression for foot stability, and cushioned soles for enhanced comfort.
OS1st sock brand features with icons and text on a white background
OS1st care instructions and shoe size chart on a white background

Unisex TA4 Thin Air (No Show) - Black

$14.99 USD
By Os1st
Size
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Step into barely-there comfort with the OS1st TA4 Thin Air No-Show Socks in Black—specially engineered for athletes and active lifestyles that demand lightweight, breathable support. These socks feature OS1st’s signature Thin Air™ mesh panels to maximize airflow, keep feet dry, and help fight odor—all while providing light arch support and a stay-put fit.

Key Features:

  • Thin Air™ Technology – Unique mesh panels increase ventilation by up to 30%, reducing heat and moisture buildup.
  • Performance Fit – Light compression in targeted zones supports the arch and keeps socks from slipping.
  • Ultra-Soft Fabric Blend – Made with micro-nylon and lycra for a soft, flexible, and moisture-wicking feel.
  • No-Show Cut – Discreet design that stays hidden below most shoe lines for a clean look.
  • Seamless Toe Construction – Minimizes friction to help prevent blisters and irritation.
  • Light Cushioning – Adds comfort without extra bulk, perfect for running shoes, training shoes, or everyday wear.
  • Helps with foot conditions such as arch support, sweaty feet, odor control, blister prevention, and general foot fatigue

Perfect For:

  • Runners, cyclists, and athletes who want maximum breathability and minimal weight
  • Hot weather training, gym sessions, or everyday wear
  • Anyone looking for no-show socks with advanced airflow and arch support