How to Use Your Samurai Insoles Sumos

Samurai Insoles Sumos are ideal for anyone dealing with heel pain, plantar fasciitis, flat feet, overpronation, Achilles tendonitis, or general foot fatigue — especially those who prefer a softer, more cushioned insole. The built-in support structure helps control hyperpronation, easing strain on the plantar fascia and other foot and ankle structures.

Sumos combine the same contoured arch support found in our core designs with twice the cushioning. The result is a supportive insole that feels plush underfoot, perfect for shoes or boots with extra interior depth and removable liners.

Usually not. They’re sized to replace the removable insoles in most shoes. If trimming is needed for a perfect fit, use your original insole as a guide and cut gradually from the toe area only.

No. Because Sumos are full-length and include built-in support and cushioning, they should replace your shoe’s current insoles. Removing the old liner ensures the arch support sits correctly and the shoe doesn’t feel overly tight.

Sumos are designed for shoes with removable insoles or extra depth. If your shoes feel snug, loosen the laces slightly or choose footwear with a roomier fit for the best comfort and performance.

Many users feel better right away, but if you’re new to structured arch support or additional cushioning, give your feet a short adjustment period. Start with a few hours of wear and gradually increase to full-day use.

They’re best suited for sneakers, walking shoes, hiking boots, and work shoes that have removable factory insoles or extra toe room. They may not fit as well in low-profile shoes or slip-ons without removable insoles.

Yes - as long as both pairs have removable insoles and similar sizing. Always check that the insole sits flat and fully supported before wearing.

Wipe the surface with mild soap and warm water, then air dry completely before reinserting. Avoid soaking, direct heat, or machine washing, which can affect the foam and bonded materials.