*UPDATE* 5 STARS I have had the Eco Vessels for 3 weeks now. I have to say the seal has broken in and seals like it should without any leaks and without having to tighten it like Superman. The bottles keeps ice and water all day without melting. From my experience now, I can recommend the Eco VesselTLDR: The screw on cap leaks unless you use the Superman tight. Which requires Superman to get it off.I bought two Eco Vessel Insulated bottles from a sporting goods store. Both have the same design with two caps "large and small" and a strainer. You remove the larger cap to pour liquid in and either cap to pour liquid out. I really liked this concept but the problem is, unless you go to the mega extreme to tighten down the larger cap the bottle will leak at that seal. This applies to both bottles.
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We premium insulated stainless steel water bottles, glass water bottles, coffee mugs, and growlers