Why choose Sea to Summit? Sea to Summit is ready to be there with you on every adventure. Their original ethos ‘to equip and inspire’ continues to drive research and development of new techniques, materials, technologies and production method. This means they won’t be ready to give up developing a product till it ticks every box. From their West Australian home base, they have grown into an award-winning global brand sold in more than 60 countries.Stay FreshInspired by epic adventures at every altitude, the Sea to Summit brand is all about the pure joys of fresh air, fresh challenges and fresh thinking. Sea to Summit cultivates a culture of design perfectionism to develop ingenious functionally beautiful products with a “no worries” Australian attitude.Collapsible Convenience The X-Mug is constructed from a flexible, European standard compliant, food grade silicone. A rigid ring within the rim keeps it sturdy and easy to drink out of but still allows the mug to be collapsed to a disk that will fit in the palm of your hand!