Marathon Pak Waist Pack - Unisex
Guide only. Tap cm or in to switch units.
Vests - unisex / men
One sizeSternum 56 – 114 cmSternum 22 – 45 in
Vests - women
| Size | Sternum | Bust |
|---|---|---|
| XXS – M | 66 – 84 cm26 – 33 in | 76 – 91 cm30 – 36 in |
| L – XXL | 84 – 104 cm33 – 41 in | 94 – 112 cm37 – 44 in |
| 1X – 3X | 104 – 127 cm41 – 50 in | 114 – 130 cm45 – 51 in |
Most Nathan vests are one size and adjust with the straps. Hydration belts too.
Reflective vests
| Size | Sternum |
|---|---|
| S / M | 61 – 102 cm24 – 40 in |
| L / XL | 96.5 – 114 cm38 – 45 in |
Worn over your layers. Between two sizes, take the larger one.
Tops - men
| Size | Chest |
|---|---|
| XS | 86 – 91 cm34 – 36 in |
| S | 94 – 99 cm37 – 39 in |
| M | 102 – 107 cm40 – 42 in |
| L | 109 – 114 cm43 – 45 in |
| XL | 117 – 122 cm46 – 48 in |
| 2XL | 124 – 130 cm49 – 51 in |
Nathan publishes chest measurements only.
How to measure
Sternum: arms relaxed, measure just below the chest bone, tape parallel to the floor.
Chest / bust: measure the fullest part, tape parallel to the floor.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
Nathan's Marathon Pak 3.0 is a lightweight and versatile running belt designed to carry your essentials during training and competitions. Its slim profile, expandable pocket, and stable fit allow you to run comfortably while keeping your phone, keys, cards, and nutrition close at hand.
Features
- Brand: Nathan
- Model: Marathon Pak 3.0
- Type: Running belt
- Capacity: 0.5 L
- Adjustable size
- Large zippered pocket with internal compartments
- Compatible with most smartphones
- Energy gel loops
- Integrated bib attachments
- Reflective details
Materials
- Nylon
- Polyester
- Breathable mesh
- Stretchy and durable fabrics
Highlights
✓ Compact and ultralight design
✓ Stable hold with minimal bounce
✓ Secure pocket for phone and personal items
✓ Compatible with long runs and competitions
✓ Convenient attachments for race bib
✓ Integrated loops for carrying energy gels
✓ Increased comfort thanks to breathable mesh
✓ Reflective elements for better visibility in low light
