Fits over standard ice auger holes
• 12-1/4 in. diameter x 3/4 in. thick. 
• Slows and can prevent ice fishing hole from freezing.
• Waterproof, closed cell foam for all day performance.
• Tip-up easily slips on & off.
• Works great with tip-ups, tip-downs, rod & reel.
• Built-in slot and center hole to insert your tip-up, tip-down or fishing line without interrupting your fishing.