HydraPak 42mm Speedfill Cap

• Flip‑open spout for quick, one‑handed filling.
• High‑flow opening makes refills faster at aid stations.
• Leak‑proof seal prevents spills in packs and vests.
• Compatible with HydraPak’s 42mm soft flasks and reservoirs.
• Lightweight, durable, and ideal for racing or long training days.

• Thread size: 42mm
• Compatibility:
  - HydraPak Flux™
  - HydraPak UltraFlask™
  - HydraPak SkyFlask™
  - HydraPak Seeker™ 42mm
• Cap style: Flip‑open Speedfill spout
• Flow: High‑flow opening for rapid filling
• Seal: Leak‑proof twist‑on design
• Materials: BPA‑free, PVC‑free
• Weight: Approx. 20–25 g (varies slightly by batch)
• Use: Replace standard 42mm cap for faster refills
• Maintenance: Rinse after use; top‑rack dishwasher safe

• Race days where refill speed matters
• Aid‑station efficiency during ultras
• Long missions with frequent water stops
• Runners who want a cleaner, faster way to top up bottles
• Pairing with HydraPak soft flasks for a streamlined setup

The Speedfill Cap solves a real problem for trail runners: slow, messy refills. With its wide, fast‑flow opening and secure flip‑top design, it makes topping up water effortless — especially during races or long days where every second counts. It’s lightweight, durable, and integrates perfectly with the HydraPak bottles runners already use, making it a simple upgrade with a big impact.