Discover the Trefl Prime Uft puzzle consisting of an impressive 13,500 pieces! Trefl Prime Uft Puzzle will delight every puzzle fan! What makes them different? The use of unique Unlimited Fit Technology, the thickest puzzle board on the market and a special, irregular shape of the elements! You can move and turn the puzzle without worrying that they will fall apart. You can combine any pictures from the Prime Uft series, with the same amount of elements, into one large composition. Puzzles will make a perfect gift for birthdays or Christmas.