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Investor Presentaiton

Tissue Expanders INNOVATIVE BREAST TISSUE EXPANDERS Allo X2Ⓡ ONE of a kind aspiration port expansion port Integral drain Dual-port design and integral drain: Provide direct access to the periprosthetic space Enable fluid aspiration and allow for less invasive, non-surgical draining of serious fluid ✓ Mitigate risks associated with breast expansion and ultimately reduce reoperation rates Allow for diagnostic fluid sampling Soft, refined design allows for gentle and more comfortable expansion ✓Soft, pliable outer shell reduces friction upon insertion Without ridges or rings for improved comfort Port location designed to aid in predictable, consistent expansion Dermaspan ™ ONE for all sientra. 10

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