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The Summer Affirm 335 rear-facing infant car seat is advanced safety made simple. It is specifically designed to address the foundations of safety, fit-to-child, and fit-to-vehicle while being used correctly every time! Plus, the uniquely designed base provides the reinforcing strength of steel. One of your first big decisions as a parent is choosing the best car seat for your baby, so we designed this newborn car seat with a number of advanced safety features. The car seat includes an adjustable harness position to provide a perfect fit for babies from 3-35 pounds. Plus, it was engineered with added levels of SureShield protection and offers a low and deep child position with full-surround EPS energy-absorbing foam. The uniquely designed Steeloc base makes a confident, great fitting install, simple and easy while the Steeloc Arm provides the reinforcing strength of steel throughout the entire base for added security. Another key feature is the integrated anti-rebound handle, engineered for added protection when used in the instructed position. Now you can go confidently, anywhere, anytime.


  • Designed to fit babies from 3-35 pounds, 15-32 inches
  • Includes Affirm Steeloc base, making a confident install simple and easy, while providing the reinforcing strength of steel. Plus, dual-level indicators and adjustable foot
  • Added levels of SureShield protection: Front-Impact Tested, Side-Impact Tested, Rear-Impact Tested, Rollover Tested, 2X Impact Force Tested, Aircraft Approved, ASTM 2050 compliant. Meets or exceeds all applicable safety standards, including FMVSS 213
  • Additional features: FloatCarry handle and lightweight seat (under 8 pounds) designed to minimize strain. Integrated anti-rebound handle engineered for added protection. Adjustable car seat canopy. 5-point padded harness.
  • Rear-facing vehicle use only. Compatible with the Summer Myria Modular Stroller, Summer Myria Travel System, Summer 3Dpac CS, and Summer 3Dpac CS lite stroller


  • Brand: Summer Infant
  • Style: Car Seat
  • Color: Onyx Black
  • Dimensions: 27.50 x 17.50 x 24.50 Inches
  • Weight: 16.80 Pounds
  • Installation Type: Latch
  • Material: Alloy Steel
  • Minimum Weight Recommendation: 3.00 Pounds
  • Maximum Weight Recommendation: 35.00 Pounds
  • Maximum Height Recommendation: 32 Inches
  • Harness Type: ‎5-Point
Weight 1 lbs