srd
SRD
Swimming, Improved: As swimming, except it grants a +10 competence bonus on its wearer’s Swim checks.
Moderate transmutation; CL 7th; Forge Ring, creator must have 10 ranks in the Swim skill*;* Price 10,000 gp.
Open Game Content from the System Reference Document 3.5, used under the Open Game License 1.0a.