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Relay Fly Zip

Regular price $100.00 Sale price $30.00
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Color: Black

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Size: 5

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Size Guide · Merrell
Size Guide
Merrell footwear and apparel are built for the outdoors. Use the charts below to find your best fit. If you are between sizes, we recommend sizing up for a more comfortable fit, especially with thick socks.
Men’s Footwear
Measure your foot length while standing, heel against a wall. Use the larger foot measurement.
US Size UK Size EU Size JP (cm) Foot Length (in)
7 6 40 25.0 9.6"
7.5 6.5 40.5 25.4 9.8"
8 7 41 25.8 9.9"
8.5 7.5 41.5 26.2 10.1"
9 8 42 26.7 10.3"
9.5 8.5 42.5 27.1 10.4"
10 9 43 27.5 10.6"
10.5 9.5 44 28.0 10.8"
11 10 44.5 28.4 10.9"
11.5 10.5 45 28.8 11.1"
12 11 46 29.2 11.3"
13 12 47 30.0 11.6"
14 13 48 30.9 12.0"
15 14 49.5 31.8 12.4"
Women’s Footwear
Women’s styles generally run true to size. If you have a wide foot, consider sizing up.
US Size UK Size EU Size JP (cm) Foot Length (in)
5 2.5 35 22.0 8.5"
5.5 3 35.5 22.4 8.7"
6 3.5 36 22.9 8.8"
6.5 4 36.5 23.3 9.0"
7 4.5 37 23.7 9.1"
7.5 5 38 24.1 9.3"
8 5.5 38.5 24.6 9.4"
8.5 6 39 25.0 9.6"
9 6.5 39.5 25.4 9.8"
9.5 7 40 25.8 9.9"
10 7.5 40.5 26.2 10.1"
10.5 8 41 26.7 10.3"
11 8.5 41.5 27.1 10.4"
12 9.5 42.5 28.0 10.8"
Kids’ Footwear
Children’s sizes are based on foot length. Allow roughly a thumb’s width of room for growth.
US Size UK Size EU Size JP (cm) Age (approx.)
10C 9C 27 16.5 3 – 4 yrs
11C 10C 28 17.3 4 – 5 yrs
12C 11C 29.5 18.1 5 – 6 yrs
13C 12C 31 19.0 6 – 7 yrs
1Y 13C 32 19.8 7 – 8 yrs
2Y 1Y 33.5 20.6 8 – 9 yrs
3Y 2Y 35 21.5 9 – 10 yrs
4Y 3Y 36 22.3 10 – 11 yrs
5Y 4Y 37.5 23.1 11 – 12 yrs
6Y 5Y 38.5 24.0 12 – 13 yrs
Men’s Apparel
Measure your chest at the fullest point and your waist at the narrowest point.
Size Chest (in) Waist (in) Hip (in) Sleeve (in)
XS 33 – 35" 27 – 29" 33 – 35" 31.5"
S 35 – 38" 29 – 32" 35 – 38" 32.5"
M 38 – 41" 32 – 35" 38 – 41" 33.5"
L 41 – 44" 35 – 38" 41 – 44" 34.5"
XL 44 – 47" 38 – 41" 44 – 47" 35.5"
2XL 47 – 50" 41 – 44" 47 – 50" 36.5"
3XL 50 – 53" 44 – 47" 50 – 53" 37.5"
Women’s Apparel
Measure your bust at the fullest point, waist at the narrowest, and hips at the fullest.
Size Bust (in) Waist (in) Hip (in) Sleeve (in)
XS 31 – 33" 24 – 26" 34 – 36" 29.5"
S 33 – 35" 26 – 28" 36 – 38" 30.0"
M 35 – 37" 28 – 30" 38 – 40" 30.5"
L 37 – 40" 30 – 33" 40 – 43" 31.0"
XL 40 – 43" 33 – 36" 43 – 46" 31.5"
2XL 43 – 46" 36 – 39" 46 – 49" 32.0"
Width & Fit Guide
Medium (M / D)
Our standard width. Fits most feet comfortably and is the default for most Merrell styles.
Standard Fit
Wide (W / 2E)
Extra room in the forefoot and instep. Ideal for wider feet, high arches, or thicker socks.
Wide Fit
Barefoot & Wide Toe
Select styles feature a foot-shaped toe box that lets toes splay naturally for better balance.
Natural Fit
How to Measure Your Feet
1
Prepare
Stand on a piece of paper with your heel against a wall. Wear the socks you plan to wear with your new footwear.
2
Mark & Measure
Mark the tip of your longest toe and the back of your heel. Measure the distance between the two marks.
3
Compare
Match your foot length in inches or centimeters to the chart above. If between sizes, size up.
4
Check Width
Measure the widest part of your foot. Use the Width & Fit Guide to select the best fit for your foot shape.

Fit Note: Merrell footwear is designed for trail and outdoor performance. Many hiking styles run slightly roomy to accommodate thicker socks and foot swelling during long hikes.

Measure your feet at the end of the day, when they are at their largest. Always measure both feet and use the larger measurement for the best fit.

If you are still unsure about your size, our customer service team is happy to help. Contact us for personalized fit recommendations.

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Relay Fly Zip

Relay Fly Zip
  • Full grain leather and breathable mesh upper
  • Zipper for easy on and off
  • 100% recycled breathable mesh lining
  • Removable EVA foam footbed
  • 100% recycled mesh footbed cover
  • Rubber outsole
  • Half pair weight: 0lbs-8.29oz, 235g