Abdominal Curl-Up Tester (6 Color Set)
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The curl-up test measures abdominal strength and endurance, which is important in back support and core stability. The 3" measuring strip is for 5-9 year olds and the 4.5" side is used for students ages 10 and up. Made of heavy-duty, durable rubber. Sold in a set of 6. Measures 32" x 8".