I bought this one for my sweaters but do not earn as much space as for duvets. You really have articles with air (duvet, down jacket, sleeping bag, foam pillow, etc.). It takes swelling, it is the condition. For the rest it is not very effective. No need to put T-shirts or apparel fabrics, jeans, sweaters tight wool, etc. Otherwise the "air gap" remains (he has not pumped up after several months). it can store tight I may have won 25% of volume, which can be significant nonetheless.
