pet is ultralight compared with glass, 100 recyclable and shatterproof, important for manufacturers and consumers. perfect choice when lightweight, unbreakable bottles are required such as for airlines, sporting events, concerts, picnics and other &ldquoonthego&rdquo situations. appe beer bottles protect against oxygen and uv light ingress, and against carbon dioxide loss.  appe&rsquos barrier solutions can be monolayer or multilayer, delivering the shelflife that the brewer requires.