On Women's Cloudboom Strike

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 Cloudboom Strike

Product Details

Shoe Specifications

Built for your fastest half- and full marathons, the Cloudboom Strike revolutionizes the racing experience. Ultra-responsive Helion™ HF hyper foam and an innovative drop-in midsole – which On calls a Bounceboard – propel you forward with power.

Product Highlights

Race-specific CloudTec®. Strategically-placed CloudTec® elements create a faster, smoother roll-through, while the ultra-cushioned ride protects against impact. The result? Increased running efficiency.
Cushioned Bounceboard. Functioning like a drop-in midsole, the innovative Bounceboard boosts the shoe's stack height for maximum energy return – all while abiding by stack height regulations.
Ultralight upper. Ultralight and breathable, the one-piece, semi-transparent mesh upper helps to reduce overheating. The cage-like construction locks down the midfoot for a secure, race-ready fit.
Carbon fiber Speedboard®. Made with stiff carbon fiber, the spoon-shaped Speedboard® works like a spring, absorbing energy and transferring it into the forefoot for the most powerful take-offs possible.

Product Details

Best For: Speed Work, Race Day, Carbon Plate
Sizing & Fit: Relaxed, Most Order Half a Size Down
Support & Cushioning: Neutral, High Cushion
Feel: Soft, Responsive
Weight: 194g / 6.8oz (Women's size 8)
Drop: 4mm (39.5mm / 35.5mm)

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: Carbon Plate

A snappy, high-performance plate designed to maximize propulsion and energy return.

Cushioning

High Cushion

Light High

Thick cushioning for maximum comfort.

Support

Neutral

Neutral High Support

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

Feel

Soft

Responsive Extra Soft

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

Sizing & Fit

Roomy 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

194.0g/6.8oz

129g 351g

Drop

4 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. (39.5 mm / 35.5 mm)

Questions? Reach out for more guidance!

Key Features

Support & Cushioning

Neutral, High Cushion

Heel-to-Toe Drop

4 mm

Sizing & Fit

Roomy Toe Box, Most Order a Half Size Down

Plate

Carbon Plate

Account