On Cloudboom Strike LS

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 Cloudboom Strike LS

Product Details

Shoe Specifications

On's ultrafast Cloudboom Strike, now with their lightest LightSpray™ upper. Get ready for serious pace.

An ultra-thin, second-skin fit that's seamless, with enough support for race day. How? A single 1.5km long filament is spun by robot to create a mesh-like upper. Which is breathable and elastic, with no need for laces. And, at just 30g, it’s the lightest upper On has ever made. Creating the upper in a single piece not only creates a seamless, distraction-free fit. It also minimizes waste, eliminates the need for glues and emits 75% less CO₂ than their other premium uppers. Invented in On's lab – for the future. Two layers of Helion™ HF hyper foam provide high energy return and impact absorption, with a pre-shaped, stiff carbon fiber Speedboard® sandwiched between, for powerful propulsion at every stride. And, On maximized traction on the outsole, by increasing the ground contact in key areas.

Product Highlights

LightSpray™ technology for our lightest-ever upper.
Made without a sockliner to maximize Helion HF content.
Over 40% bio-based Helion™ HF hyper foam for high-speed energy return.
CloudTec® elements create a faster, smoother roll-through.
Seamless and responsive second-skin fit.
Ultra-cushioned ride protects against impact.
Spoon-shaped Speedboard® to absorb and transfer energy.
Lace-free construction minimizes distractions.

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

Extra Soft

Responsive Extra Soft

Extra cushioning for a smooth, cloud-like experience.

Sizing & Fit

True to Size

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

170.0g/5.99oz

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

True to Size

Plate

Carbon Plate

Account