Don't see the 28 mm cap adapter for a Sawyer filter, how do I order the caps for that?

Hi, the adapter is available on HydraPak.com in the accessory section.

What is the cap size please? Is the mouth like a normal bottle?

The cap is smaller than the caps for Nalgene bottles, but bigger than the caps for smart water bottles. I don't know the exact size by measurement or by its name.

Does anyone know if this product will be compatible with the MSR MiniWorks EX Backountry Water Filter? Thanks!

The HydraPak Seeker has a 42mm cap and the filter screws onto a 63mm bottle so this would not be compatible.

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HydraPakSeeker

Product ID: 320304045

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Details

Brand
HydraPak
Material
Thermoplastic
Bottle Type
Collapsible
Color
Mammoth Grey
Capacity
3 Liters

Description

HydraPakSeeker

Specifications

Brand	HydraPak
Material	Thermoplastic Polyurethane
Bottle Type	Collapsible Bottle
Color	Mammoth Grey
Capacity	3 Liters
Special Feature	Filter
Product Dimensions	5.51"W x 14.57"H
Product Care Instructions	Hand Wash Only
Model Name	Seeker
Recommended Uses For Product	Hiking, Camping, Backpacking, Sports, Travel
Number of Items	1
Theme	Outdoor/Adventure
Reusability	Reusable
Shape	Rectangular
Style	3 Liter
Finish Type	Glossy
Unit Count	1.0 Count
Package Information	Bag
Specific Uses For Product	Outdoor Adventures, Backcountry, Remote Locations
Item Weight	92 Grams
Manufacturer	HydraPak
UPC	834456002482
Global Trade Identification Number	00834456002482
Part Number	HYD3SEEK3B
Item Weight	3.25 ounces
Item model number	A823M
Size	101.4 Ounces
Finish	Glossy
Pattern	Water Storage
Item Package Quantity	1
Special Features	Filter
Included Components	1 Collapsible Bottle
Batteries Included?	No
Batteries Required?	No
Warranty Description	Beyond Lifetime Warranty, Lifetime Warranty

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