• This autumn and winter warming uses heat-storing fibers on the neck to generate heat on its own. The breathing honeycomb and breathable.
• You can add filters yourself (not included).
• Self heating cationic fiber is used to bind rayon and polypropylene fiber together, which can the of heat body and play the function of warmth and cold resistance.
• The is humanized designed to against , wind, dust, smog, pollution, etc. The fabric is soft and elastic, making comfortable to wear.
• One size fits all people. Suitable for fitness, running, cycling, boating, jogging, hiking, travel, rock, climbing, fishing.

1 Piece Autumn Winter Cycling Neck Gaiter