The Set includes a long bottle brush, great for cleaning inside bottles; a straw brush, which easily gets inside sports bottle straws; and a detail cleaner, which gets into the crevices of caps and lids. All three have durable nylon bristles. They store together on a handy ring and snap off for use. Dimensions: Bottle Brush: 1.25" x 2.88" x 14", Straw Brush: 0.375" x 1" x 10.5", Detail Brush: 0.5" x 1.38" x 4.25"