Drink Tube Cap - 42mm

Name: Drink Tube Cap - 42mm
Brand: HydraPak
SKU: WHP-P007
Price: 5.04 USD
Availability: InStock
Rating: 4.8 (5 reviews)

$5.04 $8 In stock

Category: Replacement Parts

This replacement cap features a drink tube designed for quick and minimal effort access to your hands free hydration flask or bottle. Fits all HydraPak products with a 42mm opening including the SoftFlask 500ml and 750ml, Stash 750ml bottle, UltraFlasks, and Seeker water storage containers.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Ava ★★★★★ Oct 18, 2026

Perfect for hiking — I can just clip it to my pack strap and sip hands-free without fumbling. The 42mm fit was spot-on and the tube really does make hydration effortless.

Penelope B. ★★★★★ Oct 14, 2026

The tube lets me sip without breaking stride on long trail runs, which is exactly what I wanted. Fits the 42mm opening on my flask perfectly and hasn't leaked once.

Benjamin X. ★★★★★ Oct 13, 2026

Swapped this onto my 42mm flask and it clicked on in seconds with no leaks. The bite valve flows fast enough that I'm not fighting it mid-run, and it stays put on the collar.