On Women's Cloudspike Amplius 2

US	UK	EU	BR	JP (CM)
7	6.5	40	37	25
7.5	7	40.5	38	25.5
8	7.5	41	39	26
8.5	8	42	39.5	26.5
9	8.5	42.5	40	27
9.5	9	43	41	27.5
10	9.5	44	41.5	28
10.5	10	44.5	42	28.5
11	10.5	45	42.5	29
11.5	11	46	43	29.5
12	11.5	47	44	30
12.5	12	47.5	45	30.5
13	12.5	48	46	31
14	13.5	49	47	31.5

Size	Unit	CHEST	WAIST	HIP
S	CM	90–93	77–80	90–93
INCHES	35–37	30–31	35–37
M	CM	96–99	83–86	96–99
INCHES	38–39	33–34	38–39
L	CM	102–105	89–92	102–105
INCHES	40–41	35–36	40–41
XL	CM	108–111	95–98	108–111
INCHES	43–44	37–39	43–44
XXL	CM	114–118	101–105	114–117
INCHES	45–46	40–41	45–46

Size	US	UK	EUR	BR	JP (CM)
S	7–8	6.5–7.5	40–41	37.5–39	25–26
M	8.5–9.5	8–9	42–43	39.5–41	26.5–27.5
L	10–11	9.5–10.5	44–45	41.5–42.5	28–29
XL	11.5–12.5	11–11.5	46–47	43–44	29.5–30.5
XXL	13–14	12.5–13.5	48–49	46–47	31–32

US	UK	EU	BR	JP (CM)
5	3	36	33	22
5.5	3.5	36.5	34	22.5
6	4	37	34.5	23
6.5	4.5	37.5	35	23.5
7	5	38	36	24
7.5	5.5	38.5	37	24.5
8	6	39	37.5	25
8.5	6.5	40	38	25.5
9	7	40.5	39	26
9.5	7.5	41	39.5	26.5
10	8	42	40	27
10.5	8.5	42.5	41	27.5
11	9	43	42	28

Size	Unit	CHEST	WAIST	HIP
XS	CM	82	67	90
INCHES	32	26	35
S	CM	85–88	70–73	93–96
INCHES	33–35	28–29	37–38
M	CM	91–94	76–79	99–102
INCHES	36–37	30–31	39–40
L	CM	98–102	83–87	106–110
INCHES	39–40	33–34	42–43
XL	CM	106–111	92–97	114–118
INCHES	42–44	36–38	45–46

Size	US	UK	EUR	BR	JP (CM)
XS	5–6	3–4	36–37	33.5–34.5	22–23
S	7–8	5–6	38–39	36–37.5	23.5–25
M	8.5–9.5	6.5–7.5	40–41	38–39.5	25.5–26.5
L	10–11	8–9	42–43	40–41	27–28

Shoe Specifications

Description

Delivery & Returns

On Women's Cloudspike Amplius 2

Product Details

Shoe Specifications

For long-distance speed and fast final laps on the track.

On's long-distance track spike supershoe. The Cloudspike Amplius 2 delivers the perfect combination of cushioning, energy return and comfort for the longest track races – up to 10,000m.

Product Highlights

Fresh legs are fast legs - With a Helion™ HF hyper foam midsole, this shoe offers highly responsive cushioning and big energy return, while minimizing impact on the body. For fresh legs on the last lap.
Propels you forward - The top-loaded midfoot Speedboard® delivers stability and arch support – enabling athletes to maintain an efficient and steady pace lap after lap.
Lightweight comfort - Designed with race-day performance and comfort in mind. Its one-piece upper delivers lightweight support and protection, ensuring peak performance during the longest-track events.
Superior grip - Thanks to precise traction optimization and five spike pins, this shoe is light yet guarantees peak performance and grip on the track.

Product Details

Best For: Track, Race Day
Sizing & Fit: True to Size, Fitted Toe Box
Support & Cushioning: Neutral, Light Cushion
Feel: Responsive
Drop: 7mm

Shipping:

Free on all orders over $75.

Please note delivery times are estimates.

Ontario & Quebec:
Standard (3–5 days): $10, free over $75.
Express (2–3 days): $25, $20 over $75.
Rest of Canada:
Standard (3–5 days): $15, free over $75.
Express (2–3 days): $35, $30 over $75.

Returns:

14-day return policy. See our returns & exchanges policy here for more detail.
One free return per order on qualifying items.

Exchanges:

Free exchanges within 30 days.

Best For

Every Day Running

Walking

Speed Work

Race Day

Track

Recovery

Trail

Plate: Nylon Plate

A flexible plate that enhances responsiveness while maintaining comfort for daily training.

Cushioning

Light Cushion

Light High

A thinner layer of cushioning for a more responsive, closer-to-the-ground feel.

Support

Neutral

Neutral High Support

Neutral shoes that provide a natural running experience with balanced support and no added stability features.

Feel

Responsive

Responsive Extra Soft

Cushion that bounces back quickly, for a lively, 'feel-the-ground' experience.

Sizing & Fit

Fitted Toe Box

Runs Small Runs Large

A properly sized toe box offers about 1 cm of length in the front and provides a secure fit with room for natural movement, without excess width.

Weight

135.4g/4.77oz

129g 351g

Drop

7 mm

0mm 12mm+

The height difference between heel and toe. High drop (8mm+) aids heel strikers, longer distances, and Achilles relief, low drop (0-4mm) suits midfoot/forefoot strikers and a natural feel.

Questions? Reach out for more guidance!

Key Features

Support & Cushioning

Neutral, Light Cushion

Heel-to-Toe Drop

7 mm

Sizing & Fit

Fitted Toe Box, True to Size

Plate

Nylon Plate

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