The Luxy Hair Deluxe Styler can hold up to 500 grams of hair at one time. This means it can easily hold at least 10 wefts (your standard Luxy Clip-In set) and even your Volumizer Wefts! Kindly note, our Deluxe Styler was developed specifically to fit our Clip-In Hair extensions and, therefore, is about 9 inches wide (since the widest 4-clip wefts are either 7 or 8 inches). You can still use it for your Halo extensions, however, since the Halo weft is 12 inches wide it will hang off of either side.