US Patent 12,453,391 B1
Working prototype · Black leather
Real Handmade Prototype · V.04
Sheet 01 / 04USPTO 12,453,391 B1
Fig. 1 · Perspective view
Fig. 1 · Perspective view
Full-grain leather · Espresso
Concept · 01 Heritage
Soft-touch · Champagne
Concept · 02 Coastal
Performance webbing · Matte black
Concept · 03 Sport Tech
01 / 05

Own the Next Evolution of Open Footwear.

No toe post. No front strap. No ordinary sandal. Topless Shoes is a patent-protected footwear design created for brands ready to lead a new category in open foot comfort.

Patent
12,453,391 B1
Granted
Oct 2025
Assignee
Comfy Toes LLC
Chapter 01 · The opportunity

The sandal has barely changed in a generation.

For fifty years the open footwear category has cycled the same three silhouettes — the flip-flop, the slide, the strappy sandal. Every one of them puts something over, under, or between the toes. Nothing has genuinely reopened the front of the foot.

Topless Shoes is a patent-protected architecture that supports the foot through the heel, instep, and adjustable side straps — and leaves the front of the foot entirely open. It is a new structural category, not another SKU on the wall.

Chapter 02 · Working prototype

Built, worn, tested.

A hand-built sample validates the strap geometry, on foot stability, and the open front foot construction on real feet, on real ground before a licensee commits to production tooling.

"The category has been asleep for decades. This is the first architecture I've seen that gives the front of the foot back."
Inventor · Timothy Flanagan
Working prototype of the Topless Shoes sandal
Physical prototype · Studio captureComfy Toes LLC · 2025
Chapter 03 · The licensing opportunity

Why an established brand licenses this.

Topless Shoes is offered to established footwear brands with the design, manufacturing, and retail scale to launch a new category — not a novelty. The patent, the working sample, and the technical drawings are ready to be handed to a product team, letting a licensee move from license execution to shelf faster than a ground-up development program.

01
A defensible new category
Not a single SKU — an architecture. The granted US utility patent protects an entirely new way to build an open foot sandal, giving the licensee first mover position in a category with no direct competitor.
02
Range across material and tier
The structure adapts across leather, technical webbing, and molded synthetics — supporting entry, core, and premium price tiers under one protected silhouette.
03
Granted patent, ready for tooling
US Pat. 12,453,391 B1 is issued and assigned. A working prototype, patent figures, and technical drawings are ready to hand to a design and development team on day one.
Where it goes

One architecture, an entire product range.

The patented structure adapts across material, price tier, and consumer segment — resort and beach, lifestyle and fashion, comfort and wellness, athleisure, pedicure and spa, travel and packable. One protected silhouette, an entire seasonal range.

01 · Heritage
01 · Heritage
02 · Coastal
02 · Coastal
03 · Sport Tech
03 · Sport Tech
Full range of five Topless Shoes variants alongside patent Fig. 1
Full range · Five materials, one patented architectureComfy Toes LLC · 2025
US Patent 12,453,391 B1

Let's discuss
bringing this to market.

Licensing materials, patent details, and the private pitch deck are shared with qualified partners under confidentiality review.