BOULDER — Fur coats on racks at Boulder outfitters could soon be a thing of the past. The Boulder City Council will introduce a measure Tuesday that would ban the sales and manufacture of certain fur products either by fiat or by a ballot measure put to city voters in November. The proposal, which carves out exemptions for certain types of fur products such as used clothing, Native American religious items, leather and cowhide, comes several months after a federal judge upheld a similar ban in San Francisco that was approved by local leaders in 2018 but went into effect only this year.