Spring / Summer Vango Nitestar Alpha 250 The award-winning Nitestar Alpha 250 has our Alpha insulation, combining excellent warmth properties with much-improved compressibility, it is smaller and lighter than ever before. Season: 3 Season Weight: 1.65kg Shape: Mummy Zip Side: Left Suggested Usage Min: -2°C Comfort: 2°C Suggested Usage Max: 20°C Int Length: 205cm Int Chest Width: 83cm Int Foot Width: 48cm Ext Chest Width: 85cm Max User Height: 190cm (If you need a Long model, please contact us) Fill Type: Insulite Alpha Limit: -4°C Extreme : -21°C Tog : 10.0 DofE: Yes Fabric: Polair® Fabric Lining Autumn / Winter Vango Nitestar Alpha 450 The award winning Nitestar Alpha 450 is made with our Alpha insulation. Combining excellent warmth properties with much-improved compressibility, it is smaller and lighter than ever before. Perfect for youth groups or your spring and summer adventures. Season: 4 Season Weight: 2.3kg Shape: Mummy Zip Side: Left Suggested Usage Min: -9°C Comfort : -4°C Suggested Usage Max: 15°C Int Length: 205cm Int Chest Width: 83cm Int Foot Width: 48cm Ext Chest Width: 85cm Max User Height: 190cm (If you need a Long model, please contact us) Fill Type: Insulite Alpha Limit: -11°C Extreme: -31°C Tog: 11.0 DofE: Yes Fabric: Polair® Fabric Lining