The Thirty Two Prospect Boa Boot is the most versatile Boa boot in the ThirtyTwo line. With easy twist-and-go tightening on the Coiler Boa reel and maximum comfort and lightness, this boot is a sure-fire winner. Key Features of the Thirty Two Prospect Boa Snowboard Boots: Boa Lacing system. NEW 400 NBS rubber outsole with NEW phylon midsole. Water-resistant polyurethane-coated synthetic and textile upper. High-frequency welded TPU backstay construction for better durability and binding grip. Neoprene Cuff Edge for protection against calf bite. Seam-free combination latex / EVA tongue construction. Liner: Three-part Intuition liner with dual-density Ultralon foam, high-density outer foam with ultra-density inner foam for added comfort and warmth closer to foot. Full-length lacing system with lace lock for improved heel hold and fit. Finger pull-tab for easy, low-down tightening. Symmetrical eyestay stabilizer for added response and support. ...