Wave Inspire 21

Stability2025-01-01 · US · ReleaseChecked 2026-11-07

Wave Inspire 21 is a stability-focused daily trainer for runners with overpronation or anyone seeking extra support. Compared with Inspire 20's full-midsole Mizuno Enerzy Foam, version 21 adds softer, lighter Enerzy NXT at the heel wedge. A medially raised Mizuno Wave plate guides the stride from landing through toe-off, while a breathable, durable air-mesh upper uses the same last as Wave Rider for daily running.

Key specifications

Weight

295 g

All models average 268.9 gDifference from average +26.1 g

Average of 973 models

Drop

12 mm

All models average 6.8 mmDifference from average +5.2 mm

Average of 986 models

Stack (heel)

38 mm

All models average 34.3 mmDifference from average +3.7 mm

Average of 810 models

MSRP

$140.00 USD · US · Tax excluded

All models average $165.57Difference from average −25.57 USD

Average of 680 models

This modelAll models average

Stack (forefoot): 26 mm
Carbon plate: No
Midsole: MIZUNO ENERZY NXT / MIZUNO ENERZY FOAM
Outsole: X10
Use cases: Daily

Weight notes Approximate weight per shoe at 27 cm.

Plate notes Features a plant-based Elastollan N-series Wave plate.

IN CONTEXT

Specs in context

Weight × stack788 models shown

Mizuno Wave Inspire 21295 g / 38 mm

Weight distribution973 models

95 g385 g

This model 295 gAll models average 268.9 gDifference from average +26.1 g

Drop distribution986 models

0 mm12 mm

This model 12 mmAll models average 6.8 mmDifference from average +5.2 mm

Stack distribution810 models

5 mm60 mm

This model 38 mmAll models average 34.3 mmDifference from average +3.7 mm

MSRP distribution · USD · US · Tax excluded680 models

$50.00$500.00

This model $140.00All models average $165.57Difference from average −$25.57

Unknown values are excluded. Shoe sizes and measurement conditions vary, so use these averages and distributions as a guide when comparing specifications.

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