Numa Replacement Soles Warrior (6mm): UltraGrip

Ground feel: Ultra Grounded. Ultra-minimal ground feel for barefoot-like flexibility with maximum sensory feedback from the ground.

Warrior 6mm

Maximus 9mm

Alpha 12mm

Legend 6mm

Footbed material: UltraGrip

UltraGrip

Tobacco Brown Leather

Sizing

Between sizes? Size up. Shammas tend to run small.

Foot length

US Men's	US Women's	EU	Length
4	5	36	8.88"
5	6	38	9.25"
5.5	6.5	38.5	9.44"
6	7	39.5	9.63"
6.5	7.5	40	9.88"
7	8	40.5	10.0"
7.5	8.5	41	10.13"
8	9	41.5	10.31"
8.5	9.5	42	10.5"
9	10	42.5	10.63"
9.5	10.5	43	10.81"
10	11	44	10.94"
10.5	11.5	44.5	11.13"
11	12	45	11.31"
11.5	12.5	45.5	11.5"
12	13	46	11.63"
12.5	—	47	11.77"
13	—	48	11.94"
14	—	49	12.25"

Want absolute confidence? Download your size's template, print it at 100% scale, and step inside the outline to verify your fit.

Product variants

Shamma Production Period: 5 business days

Proudly made in the USA with high quality domestic and imported materials

Fit Guide

Step-by-Step Instructions:

Loosen Zones: First, loosen the two strap zones (heel strap section and elastic forefoot strap) until there is excess slack in each section.
Center Foot: Step into the sandal and center your foot on the sole.
Secure Forefoot: Adjust the elastic forefoot strap so it holds your foot securely without cutting off circulation.
Note: The buckle self-adjusts, so don't worry about placement. Push the elastic through the tension-lock buckle on the heel to adjust tightness.
Lock the Heel: Pull the heel strap snug. The Numa system is designed to move with you, so it should feel secure but dynamic.

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