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Shark Tank Season 18 Episode 3: Steven Bartlett's Debut and Ninja's Nutcase

Reported on-air asks and outcomes for Pup Stack, Nutcase, ZALT and UnderWarmer, plus product details and Amazon links from Steven Bartlett's debut.

Shark Tank Index TeamUpdated October 8, 20266 min read

A portable dog anchor, Ninja's cashew milk, an electrolyte pouch and a shirt that heats up without a battery share the lineup in Shark Tank Season 18 Episode 3. The October 7, 2026 episode, "Diary of a Shark," features Pup Stack, Nutcase, ZALT and UnderWarmer.

It's also Steven Bartlett's guest Shark debut. He joins Daniel Lubetzky, Kendra Scott, Kevin O'Leary and Lori Greiner on the panel.

The asks and outcomes below are reported on-air terms. They haven't been independently corroborated here and do not establish that any investment closed.

ABC episode announcement · ABC episode captions

Pup Stack: a place for your dog beside you

Pup Stack grew from Brian Zibricky wanting to keep the family's dog nearby on the patio and on trips. Brian and Kayla Zibricky are the presenters named in ABC's episode captions. The product brings a weighted anchor, retractable line, storage and two removable bowls into one unit, so food, water and the dog's small supplies can travel together.

Pup Stack's reported opening ask was $150,000 for 10% equity. Brian and Kayla Zibricky reportedly accepted a joint on-air offer of $200,000 for 20% from Kendra Scott and Steven Bartlett.

The line extends up to 20 feet, and a locking dial lets you shorten it for the space around you. That matters on a patio or at a stop where a full-length line would let the dog reach furniture, trees or other obstacles. Pup Stack's instructions call for level, unobstructed ground and supervision throughout use.

The configuration affects how much you'll carry. Its standard base plate weighs 10 pounds; the complete unit weighs a little over 13 pounds before extra plates are added. The company recommends the product for most dogs up to 40 pounds, with weight bands that change the setup. Its guide calls for no extra plates for most dogs from 1 to 12 pounds, one for 13 to 22 pounds, two for 23 to 32 pounds and three for 33 to 40 pounds. Age, activity and temperament also matter, so the dog's weight is a starting point rather than a guarantee.

Use a harness rather than a collar, as the safety guidance recommends. If you're bringing Pup Stack indoors, the company limits that use to short periods with supervision. When packing it away, disconnect the dog and hold the connector before releasing the locking dial, so you control the line as it retracts.

Pup Stack's story · Product features · Weight guide · Pup Stack FAQ · Safety and use · Quick Start Guide

Nutcase: Ninja's cashew milk comes in two formats

Nutcase is the cashew milk brand founded by Jo Weinand and co-founded by Tyler "Ninja" Blevins. Both appear in ABC's episode materials. Weinand's account of the idea starts with missing the chocolate milk she grew up drinking and wanting to make an alternative.

Nutcase reportedly sought $250,000 for 5% equity and left without an on-air deal.

The first choice is how you want to prepare it. Nutcase sells ready-to-drink cans and cashew milk powder in pouches. A can is the option you can open without mixing; the powder lets you make a serving when you want one. The powder directions call for a pouch with 8 ounces of water, shaken for 30 seconds and served cold.

Chocolate Chaos, Japanese Strawberry and Vanilla Churro appear in both ranges, so choosing powder doesn't mean giving up those flavors. The formats have their own product information. Compare the serving count and ingredient label for the format you're ordering rather than assuming the can and powder have identical nutrition or pack sizes.

Both formats contain cashews. If you have a cashew allergy, avoid Nutcase. For everyone else comparing the choices, settle on can or powder first, then the flavor and number of servings you want; that makes the order total a more useful comparison.

Nutcase founders · Formats and flavors · Powder directions · Canned milk information · FDA food allergy guidance

ZALT: electrolytes in an oral pouch

ZALT puts electrolyte ingredients into a small pouch that sits between your upper lip and gum. Founders Dominic Gozza and Sam Mitchell describe wanting an option that avoided mixing powder into a drink. Their names also appear in ABC's episode captions.

ZALT's reported ask was $150,000 for 5% equity. Its reported on-air agreement with Kevin O'Leary kept the amount at $150,000 and raised the equity share to 12.5%.

The company describes ZALT as a dietary supplement with no nicotine or caffeine. Its flavors are Strawberry Lemonade, Lemon Lime, Watermelon and Cool Mint. The pouch format changes how you use the product: place it in your mouth as directed, leave it there without chewing, then remove and discard it when you're finished. Never swallow the pouch.

Keep your water routine. ZALT's FAQ says to continue drinking water normally while using a pouch, so carrying a tin doesn't replace carrying a drink. That distinction matters if you're choosing between this format and an electrolyte powder you would otherwise mix into a bottle.

When comparing a multipack, match the flavor and number of cans to the listing. The Amazon link on this page opens a Watermelon five-can listing, so check the product details if you choose a different flavor or quantity.

ZALT's story · Founders and current flavors · ZALT FAQ · Pouch directions

UnderWarmer: heat without charging a battery

UnderWarmer is a disposable, compression-style heated garment worn beneath outer clothing. ABC names Paul Schaefer and Bryan Schaefer among the episode's presenters. Built-in heat packs activate when exposed to air, so an unopened garment can stay with your cold-weather gear until you need it. Leave the package sealed until you're ready to wear it.

UnderWarmer's reported opening ask was $100,000 for 15% equity. Its reported on-air agreement with Kendra Scott was $100,000 for 20%, plus a $0.50 royalty per shirt. The reported terms don't specify a royalty cap or duration.

The company says each UnderWarmer provides about 12 total hours of heat, with weather, activity and airflow affecting the duration and temperature. The heat supply is finite. If you wear it for only a few hours, the FAQ says properly resealing it in an airtight bag may preserve the remaining heat for another outing. That doesn't give it a fresh 12 hours each time you put it on.

Fit matters because the garment is meant to sit close to the body. UnderWarmer recommends your usual shirt size, or sizing up if you're between sizes. Its instructions also call for a lightweight shirt or base layer underneath, with more clothing layered over as needed. Allow for that layer when choosing the fit.

For an occasional cold day, the appeal is having no battery to charge. For repeated use, include replacement garments in the cost, since each one is discarded once its heat supply is spent. The Amazon product family includes size variants, so select the size you want on the listing before ordering.

UnderWarmer product overview · Heat, layering and sizing instructions

Find the Episode 3 products on Amazon

The ZALT and UnderWarmer Amazon links open identified product listings. For Pup Stack and Nutcase, the buttons say "Search Amazon for Pup Stack" and "Search Amazon for Nutcase" because they open search results. Match the brand and product before choosing a result; a similarly named item can be something else entirely.

Start with the choice that matters for the product you want: Pup Stack's weight configuration, Nutcase's can or powder format, ZALT's flavor and pack size, or UnderWarmer's shirt size. Use the Amazon links to compare the matching item and seller, then check the price, availability and delivery shown for your order.