The nalgene insulated bottle carrier with zip ensures your liquid stays hot or cold for longer in any weather with moulded top zips the carrier ensures complete protection and full insulation the construction has been specifically moulded and designed to hold a 1l nalgene wide mouth water bottle the carrier also features a large stretchy loop which can be attached to your backpack waistband or clip to your pack using an accessory carabineer when out on your bike trekking in the heat or