Foams Matter: The Best Insoles for Work Boots

Support Your Customers Through Their Entire Workout

Athletic shoe construction is vital for adequately supporting individuals through their workout, but also vital are the insoles. Whether the shoe is low profile, high support, minimalist, or high stability, the best insoles for athletic shoes will hold up to even the most intense training regimen.

Much of the attention in athletic footwear design is focused on the outsoles, uppers, or traction patterns, and the insole tends to be more of an afterthought despite its crucial role in how an athletic shoe fits, feels, and performs. 

This post will explain the best insole foams for athletic footwear – why the foam choice matters, what benefits come with different foams, and how premium foam solutions can elevate your entire product line.

The Foam-Shape Combo: Designing the Best Insoles for Athletic Shoes

Athletic activities can involve repetitive impact, lateral movements, torsion, and high sweat levels, all of which push footwear materials to their limits. The best insoles for athletic shoes combine the right foam type with an optimal insole shape to deliver comfort, performance, and support. 

If an insole foam is too soft, it will compress quickly during exercise and fail to offer adequate support. Conversely, if the foam is too firm, it won’t deliver the rebound and cushion athletes expect during activity. The goal is to strike a balance with an insole foam and shape that can be responsive, resilient, and contoured to real human movement.

When evaluating insole foams for athletic shoes, we consider the following to be the most important performance indicators:

There are numerous foam options available for insole design, but the right selection depends on several factors. What type of athletic shoe is it being used for? What activities does that shoe need to support? What are the typical characteristics of those activities the foam would need to accommodate; i.e. high impact, prolonged activity, dynamic movements. 

We’ve broken down the top foams for athletic insole applications based on how they perform in different physical activities.

1. PU-Based Foams (Polyurethane)

Polyurethane foams are a go-to for many athletic footwear brands due to their ability to deliver both durability and cushioning. They offer strong shock absorption and are suitable for high-impact sports and training. For strong impact protection, versatile cushioning, form-fitting shape support, and durable compression, poured PU is a great option. For ultra breathability, lightweight cushioning, and durable compression, open cell PU is the best choice.

2. EVA Foams (Ethylene-Vinyl Acetate)

EVA foams are lightweight and cost-effective, and often used in running shoes. While they compress more quickly than PU, they’re ideal for shoes where lightweight responsiveness is key.

3. TPU Foams (Thermoplastic Polyurethane)

TPU foams are known for exceptional rebound and longevity. They’re often used in premium performance footwear and are suitable for high-intensity or long-duration activities.

4. Bio-Based and Hybrid Foams

Sustainability is a growing industry focus, and some foams, like INSITE foams, include bio-based content while delivering optimal performance. More sustainable foams are ideal for brands looking to minimize environmental impact while maintaining performance standards.

INSITE Foams and Shapes Check All the Boxes

For best results in your athletic shoe line, select an insole foam and shape that was designed using real biomechanical and human factor data. This approach means every contour and compound is backed by science and tested for real-world performance. At INSITE, our insoles are built to:

• Reduce pressure hotspots
• Improve foot alignment
• Enhance comfort and rebound
• Minimize fatigue during repetitive motion

Athletic shoe brands have long-trusted INSITE Insoles to deliver the comfort, performance, and support their customers demand. For adidas, we provided performance insole solutions that enhanced the energy return and underfoot support in select training and lifestyle footwear lines. Customers noticed increased comfort, durability, and fit during activities with high demand for those qualities. 

For Move, which is a brand focused on promoting orthotic care to younger generations, we designed insoles with a lightweight, responsive feel perfect for versatile, all-day wear. The inclusion of these insoles in their footwear helped Move differentiate itself from others in the performance-casual market. 

Finally, luxury golf shoe brand Duca Del Cosma called on INSITE for an insole that could deliver tour-level comfort for all 18 holes while still reflecting the brand’s refined, fashion-first aesthetic. Our foam formulation combined support and sophistication to help golfers connect with every swing.

Discover the Right Foam for Your Footwear Insoles

Choosing the right insole foam for athletic footwear isn’t just a technical decision—it’s a brand statement. It says you prioritize performance, care about your customers’ comfort, and understand the demands of active lifestyles.

At INSITE, we partner with footwear brands to deliver scientifically grounded, performance-focused insole solutions that integrate seamlessly into your design and manufacturing processes. Whether you’re building for running, training, walking, or sport-specific movement, we’ll help you craft insoles that keep your customers moving—and coming back for more.