The Swedes, responsible for the Volvo, have a knack for engineering forms that are as functional as they are fashionable. These days one of the country’s most successful exports is in the shape of the future – the SIGG reusable water bottle. It’s good for you and the planet, and comes in 144 designs with 22 interchangeable lids. Like a fashion house, SIGG rotates or drops designs each year. But if you’re thirsty for one of those Limited Edition Lifestyle SIGGs – its most popular line – you’d better shop around. Due to overwhelming demand, mysigg.com temporarily closed shop in May. In June, several internet retailers, including this one, announced that new inventory would not be available for the next 60 to 90 days. This blogger explains – simply – why SIGGs are hot and worth the price. You can find a SIGG to get you through this summer if you buy one that’s already available – and that’s good for the planet, too. Check out the colorful Maharadsha ($30) which comes in fuchsia, violet, ruby and turquoise, the Sunray ($25) and the Classic Red Traveler ($18). Hurry, because stock is limited and going fast. Go to www.isabellacatalog.com to find Spring Impressions ($25) and www.getngreen.com for Bubble Vision ($20). At rei.com you’ll find several SIGGS in stock and the recommended tool for hand-washing them, another hard to find SIGG item. If you must have one of the latest Lifestyle Limited Edition SIGGS, take a look at what’s selling on eBay, where you can acquire Wisdom Awakens and Flower Power (or others, as offerings on eBay is always changing). If you’re quick, you might get the sure to-be a collectible I Am Not Plastic.