BRING MORE LAUGHTER: groan tubes are perfect for parties, Christmas and other holidays. The sound tube is a fun way to trick your friends and family during a party. The strong moaning sound of the groan tube can bring a fun atmosphere to keep the party vibe going MAKE FUNNY SOUNDS: When you flip these groan tube noise maker sticks over, they make weird but funny moans that instantly grab everyone's attention, make your guests and friends laugh, and add rich fun atmosphere. CREATE DIFFERENT SOUNDS - groan tubes are not limited to just one groan. Depending on how far and how hard you shake the sound tube, you will get different sound effects. Go explore and create your own moaning concert CUTE AND FUN GIFTS: groan tubes are used for birthdays, festivals, etc. for family, friends and colleagues to bring joy to their lives and relieve stress and worries, you can also use them to make your kids happy. Kids will love these fun tubes and play with them all day. EASY TO CARRY: Each moan tube noise maker is approx. Approx. 39 cm / 16 inches long. 2.1 cm / 0.82 inch diameter is easy to hold and carry without taking up much space.