Nathan QuickStart 2.0 4L Hydration Pack – Running & Hiking Hydration Vest, Unisex One Size (Vapor Grey/Finish Lime)

Nathan QuickStart 2.0 4L Hydration Pack – Capacity, Fit & Price

The Nathan QuickStart 2.0 4 Liter Hydration Pack is the essential vest for short-to-moderate road and trail running and hiking. At $40 — 50% off the $80 compare-at price — buy online now at Trek Haul Outfitters.

4L Capacity: What It Holds & How Much Water

The QuickStart 2.0 4L offers one main back pocket plus a small rear storage pocket for essentials — phone, gels, keys, jacket. It's designed to carry flasks or soft bottles in front (flasks sold separately), with roughly 4 liters of total gear capacity across main and secondary storage.

QuickStart 2.0: 3L vs 4L vs 6L

• 3L: minimalist racing and short runs with the lightest footprint
• 4L (this pack): the sweet spot for moderate runs and hikes — extra storage for layers and more fuel
• 6L: long ultras and self-supported efforts needing max capacity

Choose the 4L if your sessions run 1–4 hours and you want both capacity and comfort without bulk.

Comfort & Secure Fit

• Moisture-wicking stretch woven fabric with chafe-free binding
• Breathable mesh shoulder straps
• Adjustable sternum straps for a secure, bounce-free fit
• Unisex One Size Fits Most (OSFM)

Specifications

• Brand: Nathan; Series: QuickStart 2.0
• Capacity: 4 liters
• Color: Vapor Grey / Finish Lime; Size: OSFM
• Main back pocket + small rear storage pocket; ample additional pockets

Price & Deal Value

Now $40 (compare at $80) — a 50% discount. Stack coupon SAVE15 for an extra 15% off and reach the $45 free-shipping threshold with any small add-on.