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HydraPak
SoftFlask Speed 500ml
$21–22 / €18–22
Soft flask for mix/water in vest; US RW ~$22; UK ~£18–20; pairs with drink mixes
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Flasks & Bottles
Soft flasks and carry systems for your drink mixes and gels.
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All Flasks & Bottles
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SaltStick
Caps (100 count)
$20–28 / €18–28
Classic salt capsule; Amazon US common path (ASIN category drives %); EU specialty
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Link pending