← Back
  • A black leather belt with a shiny silver double-ring buckle, coiled neatly against a plain white background.
  • A black leather belt with a double gold circular buckle, coiled neatly on a plain white background.
  • A black leather belt with a silver double D-ring buckle, shown laid flat on a white background. One end is pointed, and the other end is secured around the rings.
  • Two black leather belt straps are shown horizontally on a white background. Each strap has visible stitching and punched holes near the end.
  • A person in a white button-down shirt and blue jeans stands against a red brick wall with hands behind their back. The shirt is untucked and they are wearing a black belt.
  • Guide titled No. 618 O-Ring Belt Sizing Guide shows waist measurements for sizes S (30.5-34.5), M (34.5-38.5), and L (38.5-42.5), with tips for sizing up or down based on tail preference.
    Sold Out

    No. 618 O-Ring Belt, Black

    Regular price 99 USD
    Longtime Billykirk fans will recognize the return of our iconic o-ring cinch belt — originally the third design in our collection back in 2002. We've completely reimagined this classic, transforming the wider 1960s-inspired original into something more refined and versatile. The new version features a sleeker, narrower strap that's entirely hand-stitched without a single rivet, creating a sophisticated piece that transitions effortlessly from jeans to trousers. It's the perfect blend of our heritage craftsmanship with modern sensibility. PLEASE SEE OUR BELT SIZING GUIDE BELOW TO ENSURE A PROPER FIT.

    Features

    • Cut in Pennsylvania and finished in New Jersey, USA

    • Hand-stitched, burnished, and edged

    • Buckle comes in two finishes: matte nickel or brass

    • Leather will stretch about 0.5”

    Materials & Dimensions

    • 8/10-oz. vegetable-tanned, full-grain leather

    • 5/6-oz. belt tip, which will soften with use

    • Solid brass buckle crafted with passion and precision for lasting durability and style

    • Width: 1”

    Care

    Belt Sizing Guide

    Your Billykirk belt size will be 2½ inches smaller than your waist circumference. We recommend measuring your waist to ensure an accurate fit. Here are two easy ways: 

     Method 1: Using a Fabric Tape Measure

    1. Thread the tape measure through your belt loops where you normally wear your belt

    2. Keep the tape snug but not tight — leave space for one finger between the tape and your body

    3. Record your measurement in inches

    Method 2: Using String (Watch Video Tutorial)

    1. Wrap a piece of string around your waist through your belt loops

    2. Mark where the string meets and lay it flat against a ruler

    3. Record your measurement in inches

    If your waist measurement is:

    Your Billykirk belt size is:

    30 1/2”

    28”

    32 1/2”

    30”

    34 1/2”

    32”

    36 1/2”

    34”

    38 1/2”

    36”

    40 1/2”

    38”

    42 1/2”

    40”


    Sizing tip: If you fall between sizes, we recommend choosing the larger size for the most comfortable fit.

    Have a belt sizing question? Email info@billykirk.com

    Size:
    Hardware:
    Color:

    Pickup available at the 24/7 concierge at 150 Bay Street