OPINION

In these consolidated appeals, Thornton Rice and Annie Ruth Ferguson appeal their convictions and 130 month and 60 *695 month custodial sentences, respectively, following the district court’s acceptance of their guilty pleas to one count of conspiring to distribute cocaine in violation of 21 U.S.C. § 846 (2000). In their briefs filed by counsel pursuant to Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), Rice and Ferguson each challenge the district court’s decision to sentence them at the low end of the relevant guidelines range. Ferguson’s brief also challenges the adequacy of the district court’s colloquy pursuant to Fed. R.Crim.P. 11. * Finding no error, we affirm.

First, our review of the record indicates that both Rice and Ferguson were sentenced at the low end of a properly calculated guidelines range. Such challenges to a court’s exercise of discretion in setting a sentence within a properly calculated sentencing range are not reviewable on appeal. United States v. Porter, 909 F.2d 789, 794 (4th Cir. 1990).

Second, our review of Ferguson’s Rule 11 colloquy indicates that the district court properly ascertained that Ferguson was competent to enter a plea, reviewed the nature of the charges against her, the rights she would forego by pleading guilty, and her potential sentence. Because the court’s colloquy with Ferguson indicates her plea was knowingly and voluntarily entered, we find no error. See United States v. Puckett, 61 F.3d 1092, 1099 (4th Cir. 1995); United States v. DeFusco, 949 F.2d 114 (4th Cir. 1991).

As required by Anders, we have reviewed the entire record and have found no meritorious issues for appeal. We therefore affirm both Rice’s and Ferguson’s convictions and sentences. The court requires that counsel inform their clients, in writing, of their right to petition the Supreme Court of the United States for further review. If the client requests that a petition be filed, but- counsel believes that such a petition would be frivolous, then counsel may move in this court for leave to withdraw from representation. Counsel’s motion must state that a copy thereof was served on the client. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.

AFFIRMED.