New low price! The Alpina T5 Plus is an upgraded version of the standard T5. The T5 Plus is well-insulated and warm, and unlike the T5, the T5 Plus has a zippered lace cover that acts like an old-style 'gaiter' to keep snow and slush out of your boot laces and keep your feet dry. The T5 Plus has an NNN touring sole that's compatible with all Rottefella NNN bindings (except back-country).