Andrew Curtis Smith (Smith) appeals the 46-month prison sentence the district court 1 imposed after Smith pled guilty to transporting child pornography, in violation of 18 U.S.C. § 2252A(a)(l). For reversal, he argues his sentence — which was at the bottom of the advisory United States Sentencing Guidelines range — was unreasonable upon due consideration of the 18 U.S.C. § 3553(a) factors.

We disagree. See United States v. Booker, 543 U.S. 220, 261-62, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005) (discussing appellate review for unreasonableness). The record shows the district court properly considered the undisputed advisory Guidelines range, the nature of the offense, sentencing objectives, and Smith’s history and circumstances (including Smith’s lack of a criminal record, age and several positive letters written on Smith’s behalf). We see no basis to conclude the sentence is unreasonable. See Rita v. United States, — U.S. -, -, 127 S.Ct. 2456, 2462-69, 168 L.Ed.2d 203 (2007) (discussing the application of the presumption of reasonableness accorded a sentence that reflected the proper application of the advisory Guidelines); United States v. Harris, 493 F.3d 928, 931-32, 2007 WL 1964651, at *3 (8th Cir. 2007) (concluding sentence within advisory Guidelines range is presumptively reasonable).

Accordingly, the judgment is affirmed.