ECO 1" Adjustable BioThane® Dog Collar

ECO 1" Adjustable BioThane® Dog Collar

Maximum Adjustability. Legendary Durability.

The ECO Adjustable BioThane Dog Collar is our most adaptable everyday collar yet—designed for dogs who live active lives and handlers who want one collar that can do it all. Built from 1" Adjustable BioThane, this collar delivers waterproof performance, long-lasting strength, and a clean, minimalist design that adjusts effortlessly as your dog grows or your needs change.

Whether you’re training, hiking, or rotating gear between dogs, the ECO Adjustable Collar provides a secure, comfortable fit with unmatched flexibility.

Beyond the Donation
Every Bolder K9 purchase supports our Beyond the Donation program, where we go beyond traditional giving by combining financial support with hands-on volunteer work for dogs and their people.
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Why the ECO Adjustable Collar Works

Genuine BioThane Construction

• Made with 1" BioThane

• Waterproof and odor-resistant

• Flexible in cold weather

• Easy to clean and low maintenance

• Built to outlast traditional webbing or leather

Maximum Adjustability

• Extended fit range for versatile sizing

• Smooth-glide hardware for easy adjustments

• Ideal for growing dogs, seasonal coat changes, or multi-dog households

Eco-Forward Design

• Designed with efficiency and longevity in mind

• Reduces waste while maintaining Bolder K9 performance standards

Adjustment Style Options

Choose the configuration that best fits your handling preference:

Single Adjust

• Tri-glide adjustment only

• Lighter, rounder profile

• Minimal hardware feel

Dual Adjust

• Tri-glide slide + buckle adjustment

• More fixed positioning

• Ideal for consistent, repeatable fit

Buckle Options

Select the level of durability that fits your needs:

• DuraPlastic – Lightweight and everyday tough

• ALU-FLEX® – Aluminum-polymer hybrid for balanced strength and weight

• ALU-MAX® – All-aluminum quick-release for maximum durability

• COBRA® Pro-Style & FM – Professional-grade performance hardware

Size Guide

Measure your dog’s neck and allow space for two fingers.

• Small: 11"–18"

• Medium: 14"–21"

• Large: 17"–24"

The ECO Adjustable BioThane Dog Collar is built for dogs who love the outdoors, trainers who need quick adjustments between sessions, and handlers who want modern, high-performance gear without compromise.