Wave Inspire 21
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.
- Intended uses:
- Daily
Specs
- Weight
- 295g
- Of 948 known values: 668 lower, 23 equal, 257 higher. The marker uses the midpoint of equal values.
- heavierUpper 29.5%, including ties / average +27g
- Drop
- 12mm
- Of 961 known values: 924 lower, 37 equal, 0 higher. The marker uses the midpoint of equal values.
- higherUpper 3.9%, including ties / average +5.2mm
- Stack (heel/forefoot)
- 38 / 26mm
- Of 788 known values: 541 lower, 43 equal, 204 higher. The marker uses the midpoint of equal values.
- higherUpper 31.3%, including ties / average +3.7mm
- Carbon plate
- No
- 83% of 866 known models have no carbon plates
- Midsole
- MIZUNO ENERZY NXT
- Outsole
- X10
- Reference price
- $140
- US price
Weight measurement and plate details
- Weight note
- Approx. 295g at 27.0cm from Mizuno Japan official product page.
- Plate note
- Mizuno Japan's exact product page identifies a plant-based Elastollan N-series Mizuno Wave plate, a named non-carbon plate structure.
Prices and release dates by market
2 markets are registered. Values are shown as published for each market: no currency conversion and no guessed days or months. Reference prices are not current shop prices.
| Market | Reference price | Release |
|---|---|---|
| United StatesUS | $140Shown above | 2025-01-01Shown above |
| JapanJP | ¥16,500 | 2024-12-01 |
Changes from the previous model
A comparison with the registered values for Mizuno Wave Inspire 20.
In the registered data, weight is 15g lighter at 295g, heel stack is 0.5mm higher at 38mm, and forefoot stack is 0.5mm higher at 26mm.
These are differences between registered values, not a controlled comparison at the same size and measurement conditions. See the notes below the specs for weight conditions.
Compare within the database
See where these specs sit in the overall distribution. You can also compare within the same category.
Position map
Weight x stack height
registered average: 266g / 34.4mm (768 shoes)
The scatter plot includes only shoes with both weight and stack height registered.
Spec distributions
Weight
This shoe 295gregistered average 268g (948 shoes)
Drop
This shoe 12mmregistered average 6.8mm (961 shoes)
Stack height
This shoe 38mmregistered average 34.3mm (788 shoes)
Items with missing numeric values are excluded. Sample sizes and measurement conditions vary between models; this distribution is not a performance ranking.