Brand: ORIFOREST
BPA Free
Dimensions:3.08 in. * 3.08 in. * 9.26 in.
Weight: 0.80 lbs
Filter to remove bacteria, chlorine, odor. Help get rid of more than 220 threats in any natural water source & tap water.
Replaceable 4-stage integrated water filter that as a sports water bottle; New added venting membrane to speed up the flow rate - max 450 ml/min; Included carabiner is very convenient to attach to a backpack or travel bag.
Filter up to 1,500L water purification.
Ship from China
ADMIN: a built-in compass is just a toy. 
In an emergency, filter the water and then boil it. Read our blog about how to boil water in a plastic bottle.