Footwear Size Guide

Name: Theory
Brand: La Sportiva
Price: 3800000.0 IDR
Availability: InStock

Find the right fit for climbing shoes, trail running shoes, and trekking footwear. Use these charts as a starting point and always refer to product-specific sizing information when available.

Performance Fit

A snug, aggressive fit with minimal empty space. Ideal for advanced climbers seeking maximum precision on technical routes and boulders.

Balanced Fit

A balance between comfort and performance. Recommended for most climbers and general-purpose climbing.

Comfort Fit

A relaxed fit for beginners, long gym sessions, multi-pitch climbing, and all-day comfort.

La Sportiva Climbing Shoes

Comfort Fit: Downsize 0.5 to 1 EU size. Your toes should be flat but touching the end of the shoe.
Balanced Fit: Downsize 1.0 to 1.5 EU sizes. Toes should be slightly curled for better edging power.
Performance Fit: Downsize 2.0 to 3.0 EU sizes. Toes are heavily knuckled for maximum control on tiny footholds.

EU Size	US Men's	US Women's	UK Size
35.5	4	5	3
36	4.5	5.5	3.5
37	5	6	4
37.5	5.5	6.5	4.5
38	6	7	5
39	6.5	7.5	5.5
39.5	7	8	6
40	7.5	8.5	6.5
41	8	9	7
41.5	8.5	9.5	7.5
42	9	10	8
42.5	9.5	10.5	8.5
43	10	11	9
44	10.5	11.5	9.5
44.5	11	12	10
45	11.5	12.5	10.5
46	12	13	11

Unparallel Climbing Shoes

Comfort Fit: Go 0.5 size up from your street shoe size. This provides a flatter, pain-free fit for multi-pitch climbing.
Balanced Fit: Stick true to your street shoe size. Your toes will have a slight curl with no dead space in the heel or arch.
Performance Fit: Go 0.5 size down from your street shoe size. This gives a highly tight, knuckled-toe fit for maximum control.

EU Size	US Men's	US Women's	UK Size
35.5	4	5.5	3
36.5	4.5	6	3.5
37	5	6.5	4
37.5	5.5	7	4.5
38	6	7.5	5
39	6.5	8	5.5
39.5	7	8.5	6
40	7.5	9	6.5
41	8	9.5	7
41.5	8.5	10	7.5
42	9	10.5	8
42.5	9.5	11	8.5
43	10	11.5	9
44	10.5	12	9.5
44.5	11	12.5	10
45	11.5	13	10.5
46	12	13.5	11

La Sportiva Trail Running Shoes

Go 0.5 size UP from your daily street shoe size. This extra space prevents your toes from smashing into the front casing on fast, steep downhills, which causes black toenails.

EU Size	US Men's	US Women's	UK Size
35.5	4	5	3
36	4.5	5.5	3.5
37	5	6	4
37.5	5.5	6.5	4.5
38	6	7	5
39	6.5	7.5	5.5
39.5	7	8	6
40	7.5	8.5	6.5
41	8	9	7
41.5	8.5	9.5	7.5
42	9	10	8
42.5	9.5	10.5	8.5
43	10	11	9
44	10.5	11.5	9.5
44.5	11	12	10
45	11.5	12.5	10.5
46	12	13	11

La Sportiva Trekking & Hiking Footwear

Go 0.5 to 1.0 full size UP from your daily street shoe size. Carrying a heavy backpack forces your arches to flatten out and expand, making your feet physically wider and longer under load.

EU Size	US Men's	US Women's	UK Size
35.5	4	5	3
36	4.5	5.5	3.5
37	5	6	4
37.5	5.5	6.5	4.5
38	6	7	5
39	6.5	7.5	5.5
39.5	7	8	6
40	7.5	8.5	6.5
41	8	9	7
41.5	8.5	9.5	7.5
42	9	10	8
42.5	9.5	10.5	8.5
43	10	11	9
44	10.5	11.5	9.5
44.5	11	12	10
45	11.5	12.5	10.5
46	12	13	11

Important Sizing Information

Sizing varies between brands, models, materials, and intended use. Use these charts as a reference only and always review the sizing guidance on individual product pages when available.

Need Help Choosing a Size?

Contact our team and we'll help recommend the best size based on your foot shape, experience level, and intended activity.

Theory

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