Bigger, better and stronger... what more could you want in a flask? 

The inner lining has been expanded to become more durable and dishwasher safe with an improved stopper making it leak-proof so you need not have any fears on spillages in your rucksack.

• 18/8 stainless steel double-wall vacuum insulation, naturally BPA free
• Leakproof and packable
• Insulated lid doubles as a cup
• Dishwasher safe
• 24 hours' hot
• 24 hours' cold
• 5 days iced