Instruct: Classify an Amazon review as either positive or negative.
Query: Don't Bother

It is generally not regarded as a good idea to add weight to your slide. However, these barely weigh anything. For me, their biggest discouragement to use was in the fact that I used them on my marching horn and if it rained, water could work its way underneath the ends of these and I'd have to remove them to dry, which was a pain. I ultimately decided to leave these off.