Nova 4 Waterproof Men's
The Nova 4 Waterproof is built to handle wet trails, rocky climbs, and everyday walks with ease. With trail-run inspired comfort and all-weather protection, it’s your go-to for running, hiking, or just getting outside—rain or shine.
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Please note: Sizes listed on this website are all sized in US sizes. Conversions as per chart below.
Mens Boots & Shoes
| US | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 | 15 |
| Euro | 40 | 41 | 41.5 | 42 | 43 | 43.5 | 44 | 44.5 | 45 | 46 | 46.5 | 47 | 48 | 49 | 50 |
| UK | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 |
| CM | 25 | 25.5 | 26 | 26.5 | 27 | 27.5 | 28 | 28.5 | 29 | 29.5 | 30 | 30.5 | 31 | 32 | 33 |
Mens Sandals
| US | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| Euro | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 |
| UK | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| CM | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 |
Mens Clothing
| S | M | L | XL | XXL | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | |
| Neck | 37-38 | 14.5-15 | 39-40 | 15.5-16 | 42-43 | 16.5-17 | 45-46 | 17.5-18 | 46-47 | 18-18.5 |
| Chest | 91-96 | 36-38 | 99-104 | 39-41 | 107-112 | 42-44 | 114-119 | 45-47 | 122-130 | 48-51 |
| Sleeve | 84-85 | 33-33.5 | 86-88 | 34-34.5 | 89-90 | 35-35.5 | 91-92 | 36-36.5 | 94-95 | 37-37.5 |
| Waist | 71-74 | 28-29 | 76-81 | 30-32 | 86-91 | 34-36 | 96-102 | 38-40 | 104-107 | 41-42 |
| Inside leg | 79 | 31 | 81 | 32 | 84 | 33 | 86 | 34 | 86 | 34 |
Mens Bottoms
| cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | |
| Waist | 71 | 28 | 76 | 30 | 81 | 32 | 86 | 34 | 91 | 36 | 96 | 38 | 102 | 40 |
| Inseam (Short) | 76 | 30 | 76 | 30 | 76 | 30 | 76 | 30 | 76 | 30 | 76 | 30 | n/a | n/a |
| Inseam (Regular) | 81 | 32 | 81 | 32 | 81 | 32 | 81 | 32 | 81 | 32 | 81 | 32 | 81 | 32 |
| Inseam (Long) | n/a | n/a | 86 | 34 | 86 | 34 | 86 | 34 | 86 | 34 | 86 | 34 | 86 | 34 |
Mens Socks
| Size | US | UK | EU |
| S/M fits shoe size | 5 - 8.5 | 4 - 7.5 | 35 - 39 |
| M/L fits shoe size | 9.5 - 12 | 9 - 11.5 | 40 - 45 |
| L/XL fits shoe size | 12.5 - 15 | 11.5 - 14 | 46 - 50 |
Womens Boots & Shoes
| US | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 |
| Euro | 35 | 35.5 | 36 | 37 | 37.5 | 38 | 38.5 | 39 | 40 | 40.5 | 41 | 42 | 42.5 | 43 |
| UK | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 |
| CM | 22 | 22.5 | 23 | 23.5 | 24 | 24.5 | 25 | 25.5 | 26 | 26.5 | 27 | 27.5 | 28 | 28.5 |
Womens Sandals
| US | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| Euro | 36 | 37 | 38 | 39 | 40 | 41 | 42 |
| UK | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| CM | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
Womens Clothing
| S | M | L | XL | XXL | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| US | 2 | 4-6 | 8-10 | 12-14 | 16 | |||||
| UK | 6 | 8-10 | 12-14 | 16-18 | 20 | |||||
| cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | |
| Chest | 81-84 | 32-33 | 86-89 | 34-35 | 91-94 | 36-37 | 96-102 | 38-40 | 104-109 | 41-43 |
| Sleeve | 74-75 | 29-29. | 76-77 | 30-30.5 | 79-80 | 31-31.5 | 81-82 | 32-32.5 | 84-85 | 33-33.5 |
| Waist | 64-66 | 25-26 | 69-71 | 27-28 | 74-76 | 29-30 | 79-84 | 31-33 | 86-91 | 34-36 |
| Hip | 86-89 | 34-35 | 91-94 | 36-37 | 96-99 | 38-39 | 102-107 | 40-42 | 109-114 | 43-45 |
| Inseam | 79 | 31 | 81 | 32 | 81 | 32 | 81 | 32 | 84 | 33 |
Womens Pants, Bottoms & Skirts
| US* | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | ||||||||
| UK | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | ||||||||
| cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | cm | inches | |
| Waist | 66 | 26 | 69 | 27 | 71 | 28 | 74 | 29 | 76 | 30 | 81 | 32 | 84 | 33 | 91 | 36 |
| Inseam | 79 | 31 | 89 | 31.5 | 81 | 32 | 81 | 32 | 81 | 32 | 81 | 32 | 82 | 32.5 | 84 | 33 |
Womens Socks
| Size | US | UK | EU |
| S/M fits shoe size | 5 - 9.5 | 4 - 7.5 | 35 - 39 |
| M/L fits shoe size | 10 - 13 | 9 - 11.5 | 40 - 45 |
| L/XL fits shoe size | 11.5 - 14 | 46 - 50 |
Kids Boots & Shoes
Big Kids (4 - 12 Years)
| US | 10 | 11 | 12 | 13 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Euro | 27 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 |
| UK | 9 | 10 | 11 | 12 | 13 | 1 | 2 | 3 | 4 | 5 | 6 |
| CM | 16.5 | 17.5 | 18.5 | 19 | 20 | 21 | 22 | 22.5 | 23.5 | 24.5 | 25.5 |
Little Kids (12 Months - 4 Years)
| US | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 |
| CM | 12.4 | 12.9 | 13.3 | 13.7 | 14.1 | 14.6 | 15 | 15.4 | 15.8 | 16.3 | 16.7 |
Please note: All Unisex footwear on this website is listed in Mens/Unisex US sizes. Use the finder below to convert from Women’s or Mens/Unisex sizing, or match by CM length.
Find your Unisex size
Step 1: Choose your gender. Step 2: Choose your sizing type. Step 3: Select your size.
Unisex Boots & Shoes
| Mens/Unisex US (Listed) | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 | 15 | 16 |
| Equivalent Women’s US | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15.5 | 16.5 | 17.5 |
| EU | 35 | 35.5 | 36 | 37 | 37.5 | 38 | 38.5 | 39 | 40 | 40.5 | 41 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 46 | 46.5 | 47 | 48 | 49 | 50 | 51.5 |
| UK | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 13 | 14 | 15 |
| CM | 21.0 | 21.5 | 22.0 | 22.5 | 23.0 | 23.5 | 24.0 | 24.5 | 25.0 | 25.5 | 26.0 | 26.5 | 27.0 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 32.0 | 33.0 | 34.0 |
Made For
Trail Running
Trail Type
Light
Designed for all-day performance in all conditions, the Nova 4 Waterproof blends athletic fit and trail-ready cushioning with durable weather protection. Its breathable waterproof membrane keeps feet dry without overheating, while FloatPro™ Foam adds long-lasting comfort underfoot. A grippy outsole provides traction on varied terrain, making this a versatile choice for trail running, light hiking, or neighborhood walks—whatever the forecast.
Trail Rating
Waterproof
FloatPro™ Foam Midsole
Merrell Quantum Grip
Weight Per Pair
580g
Drop
8mm
Lug
4mm
Stack Height
29-21mm
- Waterproof membrane seals out water and lets moisture escape
- Cleansport NXT™ treated for natural odor control
- 50% recycled removable EVA foam footbed
- FLEXconnect® dual-directional flex-grooves in the midsole for enhanced ground connection
- FloatPro™ Foam midsole for lightweight comfort that lasts
- Merrell Quantum Grip™ durable rubber outsole that enables confidence in the most extreme trail environments
- Breathable engineered mesh and TPU upper
- 100% recycled laces and webbing
- Bellows tongue keeps out debris
- Padded collar
- Elastic lace keeper
- 100% recycled breathable mesh lining
- 50% recycled mesh footbed cover
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