Something like these.
So…they sell hydration bladders, charging 15$ for the 1.5l one, when you can get 2l ones on Amazon for 10/12$ ?__?
Got mine here:
Yoyo Outdoor Gears
No. 1, Lane 105, Section 3, Beixin Road, Xindian District, New Taipei City, 231
02 2910 5030
Warning: those bottles are a PIA to clean, IMHO.
one word for these types of water bottles: mold
Shit, and I was reusing my PET bottles!