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URSA Foamies are soft foam mounts designed for COS11s, DPAs, Sennheisers, and B3s. Their flat sides allow easy attachment to skin or costumes, reducing clothing noise with a quiet buffer. Available in packs of 12, they fit microphones 3-5mm in diameter and can reduce RF loss when rigged on aerial tips. URSA Foamies measure roughly 24x17x9mm, with a hole that stretches from 2.5mm to 6mm.