Oyster Introduces Cryo Blocks: Expanding the Capabilities of Portable Cooling

August 21, 2025

OSLO, Norway – August 21, 2025 /OUTDOOR SPORTSWIRE/ – Oyster, the Norwegian thermal technology company redefining portable cooling, today announced the launch of Cryo Blocks, a new innovation designed to push the limits of the Oyster cooler.

First released in 2023 following six years of research and development, the Oyster cooler has already set a new standard for high-performance, non-electric cooling. With Cryo Blocks, that capability now extends to sub-freezing temperatures as low as –12°C (10°F), enabling safe storage of ice cream, frozen foods, and even temperature-sensitive medicine, without electricity or dry ice.

Unlike conventional ice packs, Cryo Blocks work in tandem with Oyster’s proprietary DLTA™ thermal technology, unlocking performance previously unseen in portable coolers. This advancement positions the Oyster cooler as one of the coldest and most extreme portable solutions on the market.

“Cryo Blocks demonstrate what the Oyster platform was engineered to achieve,” said Ian Sandmæl, Co-Founder and Chief Design Officer at Oyster Thermal.

“By combining advanced materials science with practical design, we’re expanding what people can expect from a portable cooler, whether for outdoor adventure, field research, or emergency preparedness.”

Cryo Blocks are now available to consumers online at https://oystercooler.com/.

About Oyster

Oyster is revolutionizing temperature-sensitive storage to help solve global challenges with the distribution of food, vaccines, and medical supplies. In 2023, after six years of research and development, the brand introduced the world’s first fully-recyclable performance cooler to the consumer market. The patented vacuum-insulated technology provides a 600% increase in thermal insulation compared to traditional cooler technology, enabling the first truly ice-free, high-performance cooler, with three times the load capacity of traditional coolers. The company is headquartered in Oslo, Norway, with a manufacturing facility at Raufoss, Norway. Oyster is fully committed to move the world forward through responsible ground-breaking technology. To learn more, visit www.oystercooler.com.

Contact: Julie Atherton

JAM Collective

julie@jamcollective.net