AXEN 250ML Soft Flask - TPU Collapsible Running Water Bottle

Safe and Food-Grade Material: Constructed from high-quality, BPF-free TPU material that is safe for daily use and easy to clean for long-term durability.

Collapsible and Space-Saving: The foldable design allows the bottle to shrink as you drink, making it easy to carry when empty or full in any gear.

Durable Bite Valve: Features a reliable bite silicone mouthpiece with a protective dust cover to help you get water easily and maintain cleanliness.

Versatile Hydration Solution: Perfectly sized for use in hydration running vests, waist belts, or handheld during marathons, cycling, and hiking.

The decision to undertake this volume was made in 1971 at Lake Como during the Varenna summer school ofthe Italian Physical Society, where Professor Leon Rosenfeld was lecturing on the history of quantum theory. We had long been struck by the unique blend of epistemological, histori cal and social concerns in his work on the foundations and development of physics, and decided to approach him there with the idea of publishing a collection of his papers. He responded enthusiastically, and agreed to help us select the papers; furthermore, he also agreed to write a lengthy introduction and to comment separately on those papers that he felt needed critical re-evaluation in the light of his current views. For he was still vigorously engaged in both theoretical investigations of, and critical not reflections on the foundations of theoretical physics. We certainly did conceive of the volume as a memorial to a 'living saint', but rather more practically, as a useful tool to place in the hands of fellow workers and students engaged in wrestling with these difficult problems. All too sadly, fate has added a memorial aspect to our labors. We agreed that in order to make this book most useful for the con temporary community of physicists and philosophers, we should trans late all non-English items into English.

Experience the perfect balance of warmth, dryness and comfort with the Helly Hansen Women's LIFA Active Crew in Terrazzo. Designed as a performance base layer, this shirt features a sophisticated 2-layer construction: a skin-friendly 100% LIFA fiber inner layer paired with technical wicking fibers on the outside. The result is rapid moisture transfer away from the body, keeping you dry during intense workouts or chilly mountain climbs. Lightweight insulation adds just enough heat without bulk, so you can move freely all day. The crew's is made with bluesign-approved processes, guaranteeing responsible use of chemicals and sustainable production. Added Oceanbound recycled fibers help turn ocean plastic into high-performance apparel, letting you feel good about your purchase. Whether you're hitting the trail, skiing, or layering under a jacket for everyday wear, the LIFA Active Crew delivers reliable performance and all-day comfort. The crew's relaxed fit and smooth neckline make it easy to wear under jackets or on its own, while the Terrazzo color adds a subtle style statement. Its durable construction stands up to repeated washes, maintaining performance season after season.